25807423812 has 24 divisors (see below), whose sum is σ = 60550019712. Its totient is φ = 8554946400.

The previous prime is 25807423787. The next prime is 25807423819. The reversal of 25807423812 is 21832470852.

It is a super-2 number, since 2×25807423812² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25807423819) 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, 5938764 + ... + 5943107.

It is an arithmetic number, because the mean of its divisors is an integer number (2522917488).

Almost surely, 2^25807423812 is an apocalyptic number.

It is an amenable number.

25807423812 is an abundant number, since it is smaller than the sum of its proper divisors (34742595900).

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

25807423812 is a wasteful number, since it uses less digits than its factorization.

25807423812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11882059 (or 11882057 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 25807423812 in words is "twenty-five billion, eight hundred seven million, four hundred twenty-three thousand, eight hundred twelve".