28510104925 has 24 divisors (see below), whose sum is σ = 35605736712. Its totient is φ = 22644960000.

The previous prime is 28510104913. The next prime is 28510104937. The reversal of 28510104925 is 52940101582.

It is an interprime number because it is at equal distance from previous prime (28510104913) and next prime (28510104937).

It can be written as a sum of positive squares in 12 ways, for example, as 10641366649 + 17868738276 = 103157^2 + 133674^2 .

It is not a de Polignac number, because 28510104925 - 2⁷ = 28510104797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7459515 + ... + 7463335.

It is an arithmetic number, because the mean of its divisors is an integer number (1483572363).

Almost surely, 2^28510104925 is an apocalyptic number.

28510104925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28510104925 is a deficient number, since it is larger than the sum of its proper divisors (7095631787).

28510104925 is a wasteful number, since it uses less digits than its factorization.

28510104925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889 (or 5884 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 28510104925 in words is "twenty-eight billion, five hundred ten million, one hundred four thousand, nine hundred twenty-five".