25472429440 has 64 divisors (see below), whose sum is σ = 62311257360. Its totient is φ = 9952008192.

The previous prime is 25472429351. The next prime is 25472429441. The reversal of 25472429440 is 4492427452.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25472429441) 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 7 ways as a sum of consecutive naturals, for example, 435279 + ... + 490318.

Almost surely, 2^25472429440 is an apocalyptic number.

25472429440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25472429440 is an abundant number, since it is smaller than the sum of its proper divisors (36838827920).

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

25472429440 is an equidigital number, since it uses as much as digits as its factorization.

25472429440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925659 (or 925647 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 25472429440 in words is "twenty-five billion, four hundred seventy-two million, four hundred twenty-nine thousand, four hundred forty".