25701875551 has 8 divisors (see below), whose sum is σ = 28422498384. Its totient is φ = 23045267520.

The previous prime is 25701875509. The next prime is 25701875557. The reversal of 25701875551 is 15557810752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25701875551 - 2²³ = 25693486943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25701875557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16002856 + ... + 16004461.

It is an arithmetic number, because the mean of its divisors is an integer number (3552812298).

Almost surely, 2^25701875551 is an apocalyptic number.

25701875551 is a deficient number, since it is larger than the sum of its proper divisors (2720622833).

25701875551 is a wasteful number, since it uses less digits than its factorization.

25701875551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32007401.

The product of its (nonzero) digits is 490000, while the sum is 46.

The spelling of 25701875551 in words is "twenty-five billion, seven hundred one million, eight hundred seventy-five thousand, five hundred fifty-one".