25424556690 has 64 divisors (see below), whose sum is σ = 67832497152. Its totient is φ = 6056467200.

The previous prime is 25424556673. The next prime is 25424556719. The reversal of 25424556690 is 9665542452.

It is a super-2 number, since 2×25424556690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1039381 + ... + 1063560.

It is an arithmetic number, because the mean of its divisors is an integer number (1059882768).

Almost surely, 2^25424556690 is an apocalyptic number.

25424556690 is an abundant number, since it is smaller than the sum of its proper divisors (42407940462).

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

25424556690 is a wasteful number, since it uses less digits than its factorization.

25424556690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102995.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 25424556690 in words is "twenty-five billion, four hundred twenty-four million, five hundred fifty-six thousand, six hundred ninety".