25320012264 has 80 divisors (see below), whose sum is σ = 71170593120. Its totient is φ = 8410119840.

The previous prime is 25320012251. The next prime is 25320012269. The reversal of 25320012264 is 46221002352.

It is a happy number.

25320012264 is a `hidden beast` number, since 2 + 532 + 0 + 0 + 122 + 6 + 4 = 666.

It is a super-2 number, since 2×25320012264² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25320012269) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 114349 + ... + 252419.

It is an arithmetic number, because the mean of its divisors is an integer number (889632414).

Almost surely, 2^25320012264 is an apocalyptic number.

25320012264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25320012264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35585296560).

25320012264 is an abundant number, since it is smaller than the sum of its proper divisors (45850580856).

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

25320012264 is a wasteful number, since it uses less digits than its factorization.

25320012264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138372 (or 138359 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 25320012264 in words is "twenty-five billion, three hundred twenty million, twelve thousand, two hundred sixty-four".