25497714816 has 512 divisors, whose sum is σ = 89156812800. Its totient is φ = 7023034368.

The previous prime is 25497714751. The next prime is 25497714841. The reversal of 25497714816 is 61841779452.

25497714816 is a `hidden beast` number, since 2 + 5 + 4 + 97 + 71 + 481 + 6 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132112416 + ... + 132112608.

It is an arithmetic number, because the mean of its divisors is an integer number (174134400).

Almost surely, 2^25497714816 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 25497714816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44578406400).

25497714816 is an abundant number, since it is smaller than the sum of its proper divisors (63659097984).

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

25497714816 is a wasteful number, since it uses less digits than its factorization.

25497714816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 375 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 25497714816 in words is "twenty-five billion, four hundred ninety-seven million, seven hundred fourteen thousand, eight hundred sixteen".