25645151672 has 64 divisors (see below), whose sum is σ = 55276784640. Its totient is φ = 10926403200.

The previous prime is 25645151557. The next prime is 25645151681. The reversal of 25645151672 is 27615154652.

It is a super-3 number, since 3×25645151672³ (a number of 32 digits) contains 333 as substring.

It is a congruent 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, 7408022 + ... + 7411482.

It is an arithmetic number, because the mean of its divisors is an integer number (863699760).

Almost surely, 2^25645151672 is an apocalyptic number.

It is an amenable number.

25645151672 is an abundant number, since it is smaller than the sum of its proper divisors (29631632968).

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

25645151672 is a wasteful number, since it uses less digits than its factorization.

25645151672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4212 (or 4208 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The spelling of 25645151672 in words is "twenty-five billion, six hundred forty-five million, one hundred fifty-one thousand, six hundred seventy-two".