2525138900 has 18 divisors (see below), whose sum is σ = 5479551630. Its totient is φ = 1010055520.

The previous prime is 2525138897. The next prime is 2525138929. The reversal of 2525138900 is 98315252.

It can be written as a sum of positive squares in 3 ways, for example, as 356001424 + 2169137476 = 18868^2 + 46574^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12625595 + ... + 12625794.

It is an arithmetic number, because the mean of its divisors is an integer number (304419535).

Almost surely, 2^2525138900 is an apocalyptic number.

2525138900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2525138900 is an abundant number, since it is smaller than the sum of its proper divisors (2954412730).

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

2525138900 is a wasteful number, since it uses less digits than its factorization.

2525138900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25251403 (or 25251396 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2525138900 is about 50250.7601932548. The cubic root of 2525138900 is about 1361.7428096478.

The spelling of 2525138900 in words is "two billion, five hundred twenty-five million, one hundred thirty-eight thousand, nine hundred".