25374640040 has 16 divisors (see below), whose sum is σ = 57092940180. Its totient is φ = 10149856000.

The previous prime is 25374640033. The next prime is 25374640043. The reversal of 25374640040 is 4004647352.

It can be written as a sum of positive squares in 2 ways, for example, as 23806638436 + 1568001604 = 154294^2 + 39598^2 .

It is not an unprimeable number, because it can be changed into a prime (25374640043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317182961 + ... + 317183040.

Almost surely, 2^25374640040 is an apocalyptic number.

25374640040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25374640040 is an abundant number, since it is smaller than the sum of its proper divisors (31718300140).

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

25374640040 is a wasteful number, since it uses less digits than its factorization.

25374640040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634366012 (or 634366008 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 25374640040 in words is "twenty-five billion, three hundred seventy-four million, six hundred forty thousand, forty".