25534440902 has 16 divisors (see below), whose sum is σ = 39573676032. Its totient is φ = 12343975560.

The previous prime is 25534440887. The next prime is 25534440931. The reversal of 25534440902 is 20904443552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122048 + ... + 256835.

It is an arithmetic number, because the mean of its divisors is an integer number (2473354752).

Almost surely, 2^25534440902 is an apocalyptic number.

25534440902 is a deficient number, since it is larger than the sum of its proper divisors (14039235130).

25534440902 is a wasteful number, since it uses less digits than its factorization.

25534440902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380003.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 25534440902 in words is "twenty-five billion, five hundred thirty-four million, four hundred forty thousand, nine hundred two".