25400567232 has 84 divisors (see below), whose sum is σ = 72993945960. Its totient is φ = 8445015552.

The previous prime is 25400567219. The next prime is 25400567237. The reversal of 25400567232 is 23276500452.

25400567232 is a `hidden beast` number, since 25 + 40 + 0 + 567 + 2 + 32 = 666.

It is a super-3 number, since 3×25400567232³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25400567237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167383 + ... + 280745.

Almost surely, 2^25400567232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25400567232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36496972980).

25400567232 is an abundant number, since it is smaller than the sum of its proper divisors (47593378728).

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

25400567232 is a wasteful number, since it uses less digits than its factorization.

25400567232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113770 (or 113757 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 25400567232 in words is "twenty-five billion, four hundred million, five hundred sixty-seven thousand, two hundred thirty-two".