25628929948 has 24 divisors (see below), whose sum is σ = 45745478352. Its totient is φ = 12559307904.

The previous prime is 25628929939. The next prime is 25628929957. The reversal of 25628929948 is 84992982652.

It is an interprime number because it is at equal distance from previous prime (25628929939) and next prime (25628929957).

It is a self number, because there is not a number n which added to its sum of digits gives 25628929948.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136936 + ... + 264592.

It is an arithmetic number, because the mean of its divisors is an integer number (1906061598).

Almost surely, 2^25628929948 is an apocalyptic number.

It is an amenable number.

25628929948 is a deficient number, since it is larger than the sum of its proper divisors (20116548404).

25628929948 is a wasteful number, since it uses less digits than its factorization.

25628929948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128661 (or 128659 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 64.

The spelling of 25628929948 in words is "twenty-five billion, six hundred twenty-eight million, nine hundred twenty-nine thousand, nine hundred forty-eight".