25197465480 has 512 divisors, whose sum is σ = 88385126400. Its totient is φ = 5689958400.

The previous prime is 25197465479. The next prime is 25197465493. The reversal of 25197465480 is 8456479152.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 198405177 + ... + 198405303.

It is an arithmetic number, because the mean of its divisors is an integer number (172627200).

Almost surely, 2^25197465480 is an apocalyptic number.

25197465480 is a gapful number since it is divisible by the number (20) 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 25197465480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44192563200).

25197465480 is an abundant number, since it is smaller than the sum of its proper divisors (63187660920).

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

25197465480 is a wasteful number, since it uses less digits than its factorization.

25197465480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 25197465480 in words is "twenty-five billion, one hundred ninety-seven million, four hundred sixty-five thousand, four hundred eighty".