25311054678 has 64 divisors (see below), whose sum is σ = 63054899712. Its totient is φ = 6595004160.

The previous prime is 25311054653. The next prime is 25311054689. The reversal of 25311054678 is 87645011352.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233943 + ... + 324578.

It is an arithmetic number, because the mean of its divisors is an integer number (985232808).

Almost surely, 2^25311054678 is an apocalyptic number.

25311054678 is an abundant number, since it is smaller than the sum of its proper divisors (37743845034).

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

25311054678 is a wasteful number, since it uses less digits than its factorization.

25311054678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558629.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 25311054678 in words is "twenty-five billion, three hundred eleven million, fifty-four thousand, six hundred seventy-eight".