25120659228 has 24 divisors (see below), whose sum is σ = 66988424832. Its totient is φ = 7177331184.

The previous prime is 25120659209. The next prime is 25120659251. The reversal of 25120659228 is 82295602152.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 25120659228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149527650 + ... + 149527817.

It is an arithmetic number, because the mean of its divisors is an integer number (2791184368).

Almost surely, 2^25120659228 is an apocalyptic number.

25120659228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25120659228 is an abundant number, since it is smaller than the sum of its proper divisors (41867765604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25120659228 is a wasteful number, since it uses less digits than its factorization.

25120659228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299055481 (or 299055479 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 25120659228 in words is "twenty-five billion, one hundred twenty million, six hundred fifty-nine thousand, two hundred twenty-eight".