25136199936 has 189 divisors, whose sum is σ = 75432440811. Its totient is φ = 8355902976.

The previous prime is 25136199901. The next prime is 25136199937. The reversal of 25136199936 is 63999163152.

The square root of 25136199936 is 158544.

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

25136199936 is a `hidden beast` number, since 2 + 5 + 13 + 619 + 9 + 9 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25136199937) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 68490825 + ... + 68491191.

Almost surely, 2^25136199936 is an apocalyptic number.

25136199936 is the 158544-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25136199936

25136199936 is an abundant number, since it is smaller than the sum of its proper divisors (50296240875).

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

25136199936 is an frugal number, since it uses more digits than its factorization.

25136199936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 372 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 54.

The spelling of 25136199936 in words is "twenty-five billion, one hundred thirty-six million, one hundred ninety-nine thousand, nine hundred thirty-six".