25129540000 has 60 divisors (see below), whose sum is σ = 61822487034. Its totient is φ = 10051808000.

The previous prime is 25129539983. The next prime is 25129540021. The reversal of 25129540000 is 4592152.

It can be written as a sum of positive squares in 5 ways, for example, as 1746236944 + 23383303056 = 41788^2 + 152916^2 .

It is a super-2 number, since 2×25129540000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 608239 + ... + 648238.

Almost surely, 2^25129540000 is an apocalyptic number.

25129540000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25129540000 is an abundant number, since it is smaller than the sum of its proper divisors (36692947034).

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

25129540000 is an equidigital number, since it uses as much as digits as its factorization.

25129540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256507 (or 1256484 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 25129540000 in words is "twenty-five billion, one hundred twenty-nine million, five hundred forty thousand".