25187825340 has 96 divisors (see below), whose sum is σ = 80184572160. Its totient is φ = 6560543808.

The previous prime is 25187825339. The next prime is 25187825353. The reversal of 25187825340 is 4352878152.

25187825340 is a `hidden beast` number, since 2 + 518 + 7 + 82 + 53 + 4 + 0 = 666.

It is a super-2 number, since 2×25187825340² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 519154 + ... + 565593.

It is an arithmetic number, because the mean of its divisors is an integer number (835255960).

Almost surely, 2^25187825340 is an apocalyptic number.

25187825340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25187825340 is an abundant number, since it is smaller than the sum of its proper divisors (54996746820).

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

25187825340 is a wasteful number, since it uses less digits than its factorization.

25187825340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084808 (or 1084800 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 25187825340 in words is "twenty-five billion, one hundred eighty-seven million, eight hundred twenty-five thousand, three hundred forty".