25235628690 has 64 divisors (see below), whose sum is σ = 62725570560. Its totient is φ = 6493529280.

The previous prime is 25235628689. The next prime is 25235628721. The reversal of 25235628690 is 9682653252.

It is a super-2 number, since 2×25235628690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25930 + ... + 226149.

It is an arithmetic number, because the mean of its divisors is an integer number (980087040).

Almost surely, 2^25235628690 is an apocalyptic number.

25235628690 is an abundant number, since it is smaller than the sum of its proper divisors (37489941870).

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

25235628690 is a wasteful number, since it uses less digits than its factorization.

25235628690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252207.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 25235628690 in words is "twenty-five billion, two hundred thirty-five million, six hundred twenty-eight thousand, six hundred ninety".