25500085642 has 16 divisors (see below), whose sum is σ = 39600640800. Its totient is φ = 12300573040.

The previous prime is 25500085603. The next prime is 25500085643. The reversal of 25500085642 is 24658000552.

It is not an unprimeable number, because it can be changed into a prime (25500085643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101584 + ... + 247627.

It is an arithmetic number, because the mean of its divisors is an integer number (2475040050).

Almost surely, 2^25500085642 is an apocalyptic number.

25500085642 is a deficient number, since it is larger than the sum of its proper divisors (14100555158).

25500085642 is a wasteful number, since it uses less digits than its factorization.

25500085642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350501.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 25500085642 in words is "twenty-five billion, five hundred million, eighty-five thousand, six hundred forty-two".