25853537277972 has 72 divisors (see below), whose sum is σ = 68120032614816. Its totient is φ = 8259782756544.

The previous prime is 25853537277959. The next prime is 25853537277977. The reversal of 25853537277972 is 27977273535852.

It is a happy number.

25853537277972 is a `hidden beast` number, since 2 + 5 + 85 + 3 + 537 + 2 + 7 + 7 + 9 + 7 + 2 = 666.

25853537277972 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 25853537277972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25853537277977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144758238 + ... + 144936725.

Almost surely, 2^{25853537277972} is an apocalyptic number.

It is an amenable number.

25853537277972 is an abundant number, since it is smaller than the sum of its proper divisors (42266495336844).

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

25853537277972 is a wasteful number, since it uses less digits than its factorization.

25853537277972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289695077 (or 289695072 counting only the distinct ones).

The product of its digits is 1555848000, while the sum is 72.

The spelling of 25853537277972 in words is "twenty-five trillion, eight hundred fifty-three billion, five hundred thirty-seven million, two hundred seventy-seven thousand, nine hundred seventy-two".