25105064900 has 36 divisors (see below), whose sum is σ = 54490718100. Its totient is φ = 10039680000.

The previous prime is 25105064867. The next prime is 25105064987. The reversal of 25105064900 is 946050152.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18939904 + 25086124996 = 4352^2 + 158386^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437900 + ... + 491900.

Almost surely, 2^25105064900 is an apocalyptic number.

25105064900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25105064900 is an abundant number, since it is smaller than the sum of its proper divisors (29385653200).

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

25105064900 is a wasteful number, since it uses less digits than its factorization.

25105064900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58664 (or 58657 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 25105064900 in words is "twenty-five billion, one hundred five million, sixty-four thousand, nine hundred".