25538917330 has 64 divisors (see below), whose sum is σ = 49209431040. Its totient is φ = 9519846336.

The previous prime is 25538917321. The next prime is 25538917351. The reversal of 25538917330 is 3371983552.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 4140829 + ... + 4146991.

It is an arithmetic number, because the mean of its divisors is an integer number (768897360).

Almost surely, 2^25538917330 is an apocalyptic number.

25538917330 is a deficient number, since it is larger than the sum of its proper divisors (23670513710).

25538917330 is a wasteful number, since it uses less digits than its factorization.

25538917330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6655.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 25538917330 in words is "twenty-five billion, five hundred thirty-eight million, nine hundred seventeen thousand, three hundred thirty".