25457442435531 has 64 divisors (see below), whose sum is σ = 39500736307200. Its totient is φ = 16184186726400.

The previous prime is 25457442435499. The next prime is 25457442435533. The reversal of 25457442435531 is 13553424475452.

25457442435531 is a `hidden beast` number, since 2 + 5 + 4 + 5 + 7 + 4 + 42 + 43 + 553 + 1 = 666.

It is not a de Polignac number, because 25457442435531 - 2⁵ = 25457442435499 is a prime.

It is a super-2 number, since 2×25457442435531² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25457442435533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112144215 + ... + 112370991.

It is an arithmetic number, because the mean of its divisors is an integer number (617199004800).

Almost surely, 2^{25457442435531} is an apocalyptic number.

25457442435531 is a deficient number, since it is larger than the sum of its proper divisors (14043293871669).

25457442435531 is a wasteful number, since it uses less digits than its factorization.

25457442435531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228777 (or 228771 counting only the distinct ones).

The product of its digits is 40320000, while the sum is 54.

The spelling of 25457442435531 in words is "twenty-five trillion, four hundred fifty-seven billion, four hundred forty-two million, four hundred thirty-five thousand, five hundred thirty-one".