25284513397 has 32 divisors (see below), whose sum is σ = 31708938240. Its totient is φ = 19817784000.

The previous prime is 25284513347. The next prime is 25284513413. The reversal of 25284513397 is 79331548252.

It is a cyclic number.

It is not a de Polignac number, because 25284513397 - 2²³ = 25276124789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25284513397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25284513347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127372 + ... + 258442.

It is an arithmetic number, because the mean of its divisors is an integer number (990904320).

Almost surely, 2^25284513397 is an apocalyptic number.

It is an amenable number.

25284513397 is a deficient number, since it is larger than the sum of its proper divisors (6424424843).

25284513397 is a wasteful number, since it uses less digits than its factorization.

25284513397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131185.

The product of its digits is 1814400, while the sum is 49.

The spelling of 25284513397 in words is "twenty-five billion, two hundred eighty-four million, five hundred thirteen thousand, three hundred ninety-seven".