25551397704 has 96 divisors (see below), whose sum is σ = 74355533280. Its totient is φ = 7295694336.

The previous prime is 25551397699. The next prime is 25551397787. The reversal of 25551397704 is 40779315552.

It is a hoax number, since the sum of its digits (48) 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 23 ways as a sum of consecutive naturals, for example, 2083639 + ... + 2095865.

It is an arithmetic number, because the mean of its divisors is an integer number (774536805).

Almost surely, 2^25551397704 is an apocalyptic number.

25551397704 is a gapful number since it is divisible by the number (24) 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 25551397704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37177766640).

25551397704 is an abundant number, since it is smaller than the sum of its proper divisors (48804135576).

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

25551397704 is a wasteful number, since it uses less digits than its factorization.

25551397704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14027 (or 14016 counting only the distinct ones).

The product of its (nonzero) digits is 1323000, while the sum is 48.

The spelling of 25551397704 in words is "twenty-five billion, five hundred fifty-one million, three hundred ninety-seven thousand, seven hundred four".