25104501136 has 135 divisors (see below), whose sum is σ = 58102474563. Its totient is φ = 10495330560.

The previous prime is 25104501131. The next prime is 25104501161. The reversal of 25104501136 is 63110540152.

The square root of 25104501136 is 158444.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 11611355536 + 13493145600 = 107756^2 + 116160^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25104501131) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 90629830 + ... + 90630106.

Almost surely, 2^25104501136 is an apocalyptic number.

25104501136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25104501136 is the 158444-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25104501136

25104501136 is an abundant number, since it is smaller than the sum of its proper divisors (32997973427).

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

25104501136 is a wasteful number, since it uses less digits than its factorization.

25104501136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 303 counting only the distinct ones).

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

Multiplying 25104501136 by its product of nonzero digits (3600), we get a square (90376204089600 = 9506640²).

The spelling of 25104501136 in words is "twenty-five billion, one hundred four million, five hundred one thousand, one hundred thirty-six".