25212136104 has 48 divisors (see below), whose sum is σ = 68310216000. Its totient is φ = 8400679584.

The previous prime is 25212136099. The next prime is 25212136111. The reversal of 25212136104 is 40163121252.

25212136104 is a `hidden beast` number, since 2 + 5 + 21 + 21 + 3 + 610 + 4 = 666.

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, 114247 + ... + 251945.

It is an arithmetic number, because the mean of its divisors is an integer number (1423129500).

Almost surely, 2^25212136104 is an apocalyptic number.

25212136104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25212136104 is an abundant number, since it is smaller than the sum of its proper divisors (43098079896).

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

25212136104 is a wasteful number, since it uses less digits than its factorization.

25212136104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140254 (or 140247 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 25212136104 its reverse (40163121252), we get a palindrome (65375257356).

The spelling of 25212136104 in words is "twenty-five billion, two hundred twelve million, one hundred thirty-six thousand, one hundred four".