25740285685992 has 64 divisors (see below), whose sum is σ = 71980664760000. Its totient is φ = 8522510686272.

The previous prime is 25740285685943. The next prime is 25740285685997. The reversal of 25740285685992 is 29958658204752.

It is a happy number.

25740285685992 is a `hidden beast` number, since 2 + 5 + 7 + 4 + 0 + 2 + 8 + 568 + 59 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 25740285685992.

It is not an unprimeable number, because it can be changed into a prime (25740285685997) 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, 399860398 + ... + 399924765.

It is an arithmetic number, because the mean of its divisors is an integer number (1124697886875).

Almost surely, 2^{25740285685992} is an apocalyptic number.

It is an amenable number.

25740285685992 is an abundant number, since it is smaller than the sum of its proper divisors (46240379074008).

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

25740285685992 is a wasteful number, since it uses less digits than its factorization.

25740285685992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799785327 (or 799785317 counting only the distinct ones).

The product of its (nonzero) digits is 870912000, while the sum is 72.

The spelling of 25740285685992 in words is "twenty-five trillion, seven hundred forty billion, two hundred eighty-five million, six hundred eighty-five thousand, nine hundred ninety-two".