25512610398 has 32 divisors (see below), whose sum is σ = 55677473280. Its totient is φ = 7729205760.

The previous prime is 25512610393. The next prime is 25512610429. The reversal of 25512610398 is 89301621552.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25512610393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238011 + ... + 328137.

It is an arithmetic number, because the mean of its divisors is an integer number (1739921040).

Almost surely, 2^25512610398 is an apocalyptic number.

25512610398 is an abundant number, since it is smaller than the sum of its proper divisors (30164862882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25512610398 is a wasteful number, since it uses less digits than its factorization.

25512610398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94432.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 25512610398 in words is "twenty-five billion, five hundred twelve million, six hundred ten thousand, three hundred ninety-eight".