25527907940 has 12 divisors (see below), whose sum is σ = 53608606716. Its totient is φ = 10211163168.

The previous prime is 25527907939. The next prime is 25527907961. The reversal of 25527907940 is 4970972552.

It can be written as a sum of positive squares in 2 ways, for example, as 19352148544 + 6175759396 = 139112^2 + 78586^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638197679 + ... + 638197718.

It is an arithmetic number, because the mean of its divisors is an integer number (4467383893).

Almost surely, 2^25527907940 is an apocalyptic number.

25527907940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25527907940 is an abundant number, since it is smaller than the sum of its proper divisors (28080698776).

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

25527907940 is a wasteful number, since it uses less digits than its factorization.

25527907940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276395406 (or 1276395404 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 25527907940 in words is "twenty-five billion, five hundred twenty-seven million, nine hundred seven thousand, nine hundred forty".