25299539990 has 8 divisors (see below), whose sum is σ = 45539172000. Its totient is φ = 10119815992.

The previous prime is 25299539971. The next prime is 25299540031. The reversal of 25299539990 is 9993599252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264976990 + ... + 1264977009.

It is an arithmetic number, because the mean of its divisors is an integer number (5692396500).

Almost surely, 2^25299539990 is an apocalyptic number.

25299539990 is a deficient number, since it is larger than the sum of its proper divisors (20239632010).

25299539990 is a wasteful number, since it uses less digits than its factorization.

25299539990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529954006.

The product of its (nonzero) digits is 17714700, while the sum is 62.

The spelling of 25299539990 in words is "twenty-five billion, two hundred ninety-nine million, five hundred thirty-nine thousand, nine hundred ninety".