25246745496 has 320 divisors, whose sum is σ = 82961138400. Its totient is φ = 7201353600.

The previous prime is 25246745449. The next prime is 25246745527. The reversal of 25246745496 is 69454764252.

25246745496 is a `hidden beast` number, since 2 + 5 + 24 + 6 + 74 + 549 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 42007596 + ... + 42008196.

Almost surely, 2^25246745496 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 25246745496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41480569200).

25246745496 is an abundant number, since it is smaller than the sum of its proper divisors (57714392904).

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

25246745496 is an frugal number, since it uses more digits than its factorization.

25246745496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 613 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 25246745496 in words is "twenty-five billion, two hundred forty-six million, seven hundred forty-five thousand, four hundred ninety-six".