25211045492 has 72 divisors (see below), whose sum is σ = 48649386240. Its totient is φ = 11380296960.

The previous prime is 25211045491. The next prime is 25211045507. The reversal of 25211045492 is 29454011252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25211045491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40728359 + ... + 40728977.

It is an arithmetic number, because the mean of its divisors is an integer number (675685920).

Almost surely, 2^25211045492 is an apocalyptic number.

It is an amenable number.

25211045492 is a deficient number, since it is larger than the sum of its proper divisors (23438340748).

25211045492 is a wasteful number, since it uses less digits than its factorization.

25211045492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 25211045492 in words is "twenty-five billion, two hundred eleven million, forty-five thousand, four hundred ninety-two".