25012921312 has 48 divisors (see below), whose sum is σ = 50966722800. Its totient is φ = 12069406720.

The previous prime is 25012921267. The next prime is 25012921313. The reversal of 25012921312 is 21312921052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012921313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2415987 + ... + 2426317.

It is an arithmetic number, because the mean of its divisors is an integer number (1061806725).

Almost surely, 2^25012921312 is an apocalyptic number.

It is an amenable number.

25012921312 is an abundant number, since it is smaller than the sum of its proper divisors (25953801488).

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

25012921312 is a wasteful number, since it uses less digits than its factorization.

25012921312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12979 (or 12971 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

It can be divided in two parts, 250129 and 21312, that added together give a square (271441 = 521²).

The spelling of 25012921312 in words is "twenty-five billion, twelve million, nine hundred twenty-one thousand, three hundred twelve".