25479337968 has 200 divisors, whose sum is σ = 86999193600. Its totient is φ = 7044900480.

The previous prime is 25479337957. The next prime is 25479337981. The reversal of 25479337968 is 86973397452.

25479337968 is a `hidden beast` number, since 2 + 5 + 479 + 33 + 79 + 68 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 235933 + ... + 326531.

It is an arithmetic number, because the mean of its divisors is an integer number (434995968).

Almost surely, 2^25479337968 is an apocalyptic number.

25479337968 is a gapful number since it is divisible by the number (28) 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 25479337968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43499596800).

25479337968 is an abundant number, since it is smaller than the sum of its proper divisors (61519855632).

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

25479337968 is a wasteful number, since it uses less digits than its factorization.

25479337968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90657 (or 90642 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 25479337968 in words is "twenty-five billion, four hundred seventy-nine million, three hundred thirty-seven thousand, nine hundred sixty-eight".