25455640332 has 24 divisors (see below), whose sum is σ = 59426352496. Its totient is φ = 8480947968.

The previous prime is 25455640321. The next prime is 25455640337. The reversal of 25455640332 is 23304655452.

It is not an unprimeable number, because it can be changed into a prime (25455640337) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 508273 + ... + 556104.

Almost surely, 2^25455640332 is an apocalyptic number.

It is an amenable number.

25455640332 is an abundant number, since it is smaller than the sum of its proper divisors (33970712164).

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

25455640332 is a wasteful number, since it uses less digits than its factorization.

25455640332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066377 (or 1066375 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 39.

The spelling of 25455640332 in words is "twenty-five billion, four hundred fifty-five million, six hundred forty thousand, three hundred thirty-two".