1025401453 has 4 divisors (see below), whose sum is σ = 1035972700. Its totient is φ = 1014830208.

The previous prime is 1025401439. The next prime is 1025401463. The reversal of 1025401453 is 3541045201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3541045201 = 23 ⋅153958487.

It can be written as a sum of positive squares in 2 ways, for example, as 833938884 + 191462569 = 28878^2 + 13837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025401453 - 2²⁹ = 488530541 is a prime.

It is a super-2 number, since 2×1025401453² = 2102896279629022418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025401423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5285478 + ... + 5285671.

It is an arithmetic number, because the mean of its divisors is an integer number (258993175).

Almost surely, 2^1025401453 is an apocalyptic number.

It is an amenable number.

1025401453 is a deficient number, since it is larger than the sum of its proper divisors (10571247).

1025401453 is an equidigital number, since it uses as much as digits as its factorization.

1025401453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571246.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1025401453 is about 32021.8902159132. The cubic root of 1025401453 is about 1008.3964532549.

Adding to 1025401453 its reverse (3541045201), we get a palindrome (4566446654).

It can be divided in two parts, 10 and 25401453, that multiplied together give a triangular number (254014530 = T₂₂₅₃₉).

The spelling of 1025401453 in words is "one billion, twenty-five million, four hundred one thousand, four hundred fifty-three".