25371121894 has 8 divisors (see below), whose sum is σ = 38066410368. Its totient is φ = 12682318440.

The previous prime is 25371121883. The next prime is 25371121901. The reversal of 25371121894 is 49812117352.

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

It is a super-2 number, since 2×25371121894² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25371121894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611462 + ... + 1627129.

It is an arithmetic number, because the mean of its divisors is an integer number (4758301296).

Almost surely, 2^25371121894 is an apocalyptic number.

25371121894 is a deficient number, since it is larger than the sum of its proper divisors (12695288474).

25371121894 is a wasteful number, since it uses less digits than its factorization.

25371121894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242510.

The product of its digits is 120960, while the sum is 43.

The spelling of 25371121894 in words is "twenty-five billion, three hundred seventy-one million, one hundred twenty-one thousand, eight hundred ninety-four".