25400145 has 8 divisors (see below), whose sum is σ = 40640256. Its totient is φ = 13546736.

The previous prime is 25400083. The next prime is 25400147. The reversal of 25400145 is 54100452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25400145 - 2¹⁷ = 25269073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25400147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846657 + ... + 846686.

It is an arithmetic number, because the mean of its divisors is an integer number (5080032).

Almost surely, 2^25400145 is an apocalyptic number.

It is an amenable number.

25400145 is a deficient number, since it is larger than the sum of its proper divisors (15240111).

25400145 is a wasteful number, since it uses less digits than its factorization.

25400145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693351.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25400145 is about 5039.8556526948. The cubic root of 25400145 is about 293.9535652519.

Adding to 25400145 its reverse (54100452), we get a palindrome (79500597).

The spelling of 25400145 in words is "twenty-five million, four hundred thousand, one hundred forty-five".