25212612740 has 48 divisors (see below), whose sum is σ = 60519373824. Its totient is φ = 8643024000.

The previous prime is 25212612727. The next prime is 25212612757. The reversal of 25212612740 is 4721621252.

It is a junction number, because it is equal to n+sod(n) for n = 25212612697 and 25212612706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630445 + ... + 1645835.

It is an arithmetic number, because the mean of its divisors is an integer number (1260820288).

Almost surely, 2^25212612740 is an apocalyptic number.

25212612740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25212612740 is an abundant number, since it is smaller than the sum of its proper divisors (35306761084).

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

25212612740 is a wasteful number, since it uses less digits than its factorization.

25212612740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27108 (or 27106 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 25212612740 in words is "twenty-five billion, two hundred twelve million, six hundred twelve thousand, seven hundred forty".