25422737972 has 12 divisors (see below), whose sum is σ = 45116408736. Its totient is φ = 12532335480.

The previous prime is 25422737969. The next prime is 25422738041. The reversal of 25422737972 is 27973722452.

It is a super-3 number, since 3×25422737972³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25422737972.

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, 44758058 + ... + 44758625.

It is an arithmetic number, because the mean of its divisors is an integer number (3759700728).

Almost surely, 2^25422737972 is an apocalyptic number.

It is an amenable number.

25422737972 is a deficient number, since it is larger than the sum of its proper divisors (19693670764).

25422737972 is a wasteful number, since it uses less digits than its factorization.

25422737972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89516758 (or 89516756 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 50.

The spelling of 25422737972 in words is "twenty-five billion, four hundred twenty-two million, seven hundred thirty-seven thousand, nine hundred seventy-two".