25542512225665 has 16 divisors (see below), whose sum is σ = 31523694483456. Its totient is φ = 19856194480000.

The previous prime is 25542512225651. The next prime is 25542512225753. The reversal of 25542512225665 is 56652221524552.

It is not a de Polignac number, because 25542512225665 - 2⁷ = 25542512225537 is a prime.

It is a super-3 number, since 3×25542512225665³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248150977 + ... + 248253886.

It is an arithmetic number, because the mean of its divisors is an integer number (1970230905216).

Almost surely, 2^{25542512225665} is an apocalyptic number.

It is an amenable number.

25542512225665 is a deficient number, since it is larger than the sum of its proper divisors (5981182257791).

25542512225665 is a wasteful number, since it uses less digits than its factorization.

25542512225665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496405160.

The product of its digits is 14400000, while the sum is 52.

The spelling of 25542512225665 in words is "twenty-five trillion, five hundred forty-two billion, five hundred twelve million, two hundred twenty-five thousand, six hundred sixty-five".