25487475240 has 64 divisors (see below), whose sum is σ = 77219516160. Its totient is φ = 6729363200.

The previous prime is 25487475239. The next prime is 25487475347. The reversal of 25487475240 is 4257478452.

It is a super-2 number, since 2×25487475240² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25487475240.

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, 1039344 + ... + 1063583.

It is an arithmetic number, because the mean of its divisors is an integer number (1206554940).

Almost surely, 2^25487475240 is an apocalyptic number.

25487475240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25487475240 is an abundant number, since it is smaller than the sum of its proper divisors (51732040920).

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

25487475240 is a wasteful number, since it uses less digits than its factorization.

25487475240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103042 (or 2103038 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 48.

The spelling of 25487475240 in words is "twenty-five billion, four hundred eighty-seven million, four hundred seventy-five thousand, two hundred forty".