25918462628 has 24 divisors (see below), whose sum is σ = 47756308320. Its totient is φ = 12274139520.

The previous prime is 25918462627. The next prime is 25918462631. The reversal of 25918462628 is 82626481952.

It is a self number, because there is not a number n which added to its sum of digits gives 25918462628.

It is not an unprimeable number, because it can be changed into a prime (25918462627) 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, 284843 + ... + 364653.

It is an arithmetic number, because the mean of its divisors is an integer number (1989846180).

Almost surely, 2^25918462628 is an apocalyptic number.

It is an amenable number.

25918462628 is a deficient number, since it is larger than the sum of its proper divisors (21837845692).

25918462628 is a wasteful number, since it uses less digits than its factorization.

25918462628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84107 (or 84105 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The spelling of 25918462628 in words is "twenty-five billion, nine hundred eighteen million, four hundred sixty-two thousand, six hundred twenty-eight".