25402470912 has 800 divisors, whose sum is σ = 95825866752. Its totient is φ = 6521389056.

The previous prime is 25402470857. The next prime is 25402470923. The reversal of 25402470912 is 21907420452.

25402470912 is a `hidden beast` number, since 2 + 540 + 24 + 7 + 0 + 91 + 2 = 666.

It is a super-2 number, since 2×25402470912² (a number of 22 digits) contains 22 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 an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 200019393 + ... + 200019519.

Almost surely, 2^25402470912 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 25402470912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47912933376).

25402470912 is an abundant number, since it is smaller than the sum of its proper divisors (70423395840).

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

25402470912 is a wasteful number, since it uses less digits than its factorization.

25402470912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 25402470912 in words is "twenty-five billion, four hundred two million, four hundred seventy thousand, nine hundred twelve".