25212534412455 has 24 divisors (see below), whose sum is σ = 47063397571008. Its totient is φ = 12412324633536.

The previous prime is 25212534412453. The next prime is 25212534412493. The reversal of 25212534412455 is 55421443521252.

25212534412455 is a `hidden beast` number, since 2 + 5 + 2 + 1 + 2 + 534 + 41 + 24 + 55 = 666.

It is not a de Polignac number, because 25212534412455 - 2¹ = 25212534412453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25212534412455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25212534412453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21549174127 + ... + 21549175296.

It is an arithmetic number, because the mean of its divisors is an integer number (1960974898792).

Almost surely, 2^{25212534412455} is an apocalyptic number.

25212534412455 is a deficient number, since it is larger than the sum of its proper divisors (21850863158553).

25212534412455 is a wasteful number, since it uses less digits than its factorization.

25212534412455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43098349447 (or 43098349444 counting only the distinct ones).

The product of its digits is 1920000, while the sum is 45.

The spelling of 25212534412455 in words is "twenty-five trillion, two hundred twelve billion, five hundred thirty-four million, four hundred twelve thousand, four hundred fifty-five".