25257808830 has 16 divisors (see below), whose sum is σ = 60618741264. Its totient is φ = 6735415680.

The previous prime is 25257808819. The next prime is 25257808841. The reversal of 25257808830 is 3880875252.

It is an interprime number because it is at equal distance from previous prime (25257808819) and next prime (25257808841).

It is a self number, because there is not a number n which added to its sum of digits gives 25257808830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420963451 + ... + 420963510.

It is an arithmetic number, because the mean of its divisors is an integer number (3788671329).

Almost surely, 2^25257808830 is an apocalyptic number.

25257808830 is an abundant number, since it is smaller than the sum of its proper divisors (35360932434).

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

25257808830 is a wasteful number, since it uses less digits than its factorization.

25257808830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841926971.

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 25257808830 in words is "twenty-five billion, two hundred fifty-seven million, eight hundred eight thousand, eight hundred thirty".