25909670612 has 36 divisors (see below), whose sum is σ = 53124200640. Its totient is φ = 11024247024.

The previous prime is 25909670603. The next prime is 25909670621. The reversal of 25909670612 is 21607690952.

It is an interprime number because it is at equal distance from previous prime (25909670603) and next prime (25909670621).

It is a super-2 number, since 2×25909670612² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448268 + ... + 502755.

It is an arithmetic number, because the mean of its divisors is an integer number (1475672240).

Almost surely, 2^25909670612 is an apocalyptic number.

It is an amenable number.

25909670612 is an abundant number, since it is smaller than the sum of its proper divisors (27214530028).

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

25909670612 is a wasteful number, since it uses less digits than its factorization.

25909670612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951180 (or 951171 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 25909670612 in words is "twenty-five billion, nine hundred nine million, six hundred seventy thousand, six hundred twelve".