25406253002 has 64 divisors (see below), whose sum is σ = 42201398400. Its totient is φ = 11468096640.

The previous prime is 25406253001. The next prime is 25406253023. The reversal of 25406253002 is 20035260452.

It is not an unprimeable number, because it can be changed into a prime (25406253001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62117774 + ... + 62118182.

It is an arithmetic number, because the mean of its divisors is an integer number (659396850).

Almost surely, 2^25406253002 is an apocalyptic number.

25406253002 is a deficient number, since it is larger than the sum of its proper divisors (16795145398).

25406253002 is a wasteful number, since it uses less digits than its factorization.

25406253002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 25406253002 in words is "twenty-five billion, four hundred six million, two hundred fifty-three thousand, two".