25424667660 has 96 divisors (see below), whose sum is σ = 83557877760. Its totient is φ = 5654285568.

The previous prime is 25424667641. The next prime is 25424667661. The reversal of 25424667660 is 6676642452.

It is not an unprimeable number, because it can be changed into a prime (25424667661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 802500 + ... + 833579.

It is an arithmetic number, because the mean of its divisors is an integer number (870394560).

Almost surely, 2^25424667660 is an apocalyptic number.

25424667660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25424667660 is an abundant number, since it is smaller than the sum of its proper divisors (58133210100).

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

25424667660 is a wasteful number, since it uses less digits than its factorization.

25424667660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636135 (or 1636133 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 25424667660 in words is "twenty-five billion, four hundred twenty-four million, six hundred sixty-seven thousand, six hundred sixty".