25742236465 has 16 divisors (see below), whose sum is σ = 33772700160. Its totient is φ = 18680641920.

The previous prime is 25742236427. The next prime is 25742236489. The reversal of 25742236465 is 56463224752.

It is not a de Polignac number, because 25742236465 - 2¹⁷ = 25742105393 is a prime.

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, 486945 + ... + 537214.

It is an arithmetic number, because the mean of its divisors is an integer number (2110793760).

Almost surely, 2^25742236465 is an apocalyptic number.

It is an amenable number.

25742236465 is a deficient number, since it is larger than the sum of its proper divisors (8030463695).

25742236465 is a wasteful number, since it uses less digits than its factorization.

25742236465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024632.

The product of its digits is 2419200, while the sum is 46.

The spelling of 25742236465 in words is "twenty-five billion, seven hundred forty-two million, two hundred thirty-six thousand, four hundred sixty-five".