1025200031 has 4 divisors (see below), whose sum is σ = 1040501592. Its totient is φ = 1009898472.

The previous prime is 1025200019. The next prime is 1025200067. The reversal of 1025200031 is 1300025201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025200031 is a prime.

It is a super-2 number, since 2×1025200031² = 2102070207124801922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025199979 and 1025200015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025206031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7650680 + ... + 7650813.

It is an arithmetic number, because the mean of its divisors is an integer number (260125398).

Almost surely, 2^1025200031 is an apocalyptic number.

1025200031 is a deficient number, since it is larger than the sum of its proper divisors (15301561).

1025200031 is an equidigital number, since it uses as much as digits as its factorization.

1025200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15301560.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1025200031 is about 32018.7449941437. The cubic root of 1025200031 is about 1008.3304217084.

Adding to 1025200031 its reverse (1300025201), we get a palindrome (2325225232).

The spelling of 1025200031 in words is "one billion, twenty-five million, two hundred thousand, thirty-one".