25315891201 has 16 divisors (see below), whose sum is σ = 26820541440. Its totient is φ = 23866801920.

The previous prime is 25315891177. The next prime is 25315891231. The reversal of 25315891201 is 10219851352.

It is not a de Polignac number, because 25315891201 - 2⁵ = 25315891169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25315891231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69085 + ... + 235381.

It is an arithmetic number, because the mean of its divisors is an integer number (1676283840).

Almost surely, 2^25315891201 is an apocalyptic number.

It is an amenable number.

25315891201 is a deficient number, since it is larger than the sum of its proper divisors (1504650239).

25315891201 is a wasteful number, since it uses less digits than its factorization.

25315891201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166464.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 25315891201 in words is "twenty-five billion, three hundred fifteen million, eight hundred ninety-one thousand, two hundred one".