25745702730 has 32 divisors (see below), whose sum is σ = 67406931648. Its totient is φ = 6241382400.

The previous prime is 25745702681. The next prime is 25745702747. The reversal of 25745702730 is 3720754752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39008311 + ... + 39008970.

It is an arithmetic number, because the mean of its divisors is an integer number (2106466614).

Almost surely, 2^25745702730 is an apocalyptic number.

25745702730 is an abundant number, since it is smaller than the sum of its proper divisors (41661228918).

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

25745702730 is a wasteful number, since it uses less digits than its factorization.

25745702730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78017302.

The product of its (nonzero) digits is 411600, while the sum is 42.

The spelling of 25745702730 in words is "twenty-five billion, seven hundred forty-five million, seven hundred two thousand, seven hundred thirty".