25902482644 has 24 divisors (see below), whose sum is σ = 46626894720. Its totient is φ = 12584478336.

The previous prime is 25902482623. The next prime is 25902482647. The reversal of 25902482644 is 44628420952.

It is a junction number, because it is equal to n+sod(n) for n = 25902482594 and 25902482603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25902482647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469477 + ... + 521740.

It is an arithmetic number, because the mean of its divisors is an integer number (1942787280).

Almost surely, 2^25902482644 is an apocalyptic number.

It is an amenable number.

25902482644 is a deficient number, since it is larger than the sum of its proper divisors (20724412076).

25902482644 is a wasteful number, since it uses less digits than its factorization.

25902482644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991407 (or 991405 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 25902482644 in words is "twenty-five billion, nine hundred two million, four hundred eighty-two thousand, six hundred forty-four".