25729515672 has 32 divisors (see below), whose sum is σ = 73512902400. Its totient is φ = 7351290144.

The previous prime is 25729515671. The next prime is 25729515673. The reversal of 25729515672 is 27651592752.

It is an interprime number because it is at equal distance from previous prime (25729515671) and next prime (25729515673).

It is a super-3 number, since 3×25729515672³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25729515671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76575772 + ... + 76576107.

It is an arithmetic number, because the mean of its divisors is an integer number (2297278200).

Almost surely, 2^25729515672 is an apocalyptic number.

It is an amenable number.

25729515672 is an abundant number, since it is smaller than the sum of its proper divisors (47783386728).

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

25729515672 is a wasteful number, since it uses less digits than its factorization.

25729515672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153151895 (or 153151891 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 51.

The spelling of 25729515672 in words is "twenty-five billion, seven hundred twenty-nine million, five hundred fifteen thousand, six hundred seventy-two".