25742315 has 4 divisors (see below), whose sum is σ = 30890784. Its totient is φ = 20593848.

The previous prime is 25742293. The next prime is 25742317. The reversal of 25742315 is 51324752.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25742315 - 2²² = 21548011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25742317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574227 + ... + 2574236.

It is an arithmetic number, because the mean of its divisors is an integer number (7722696).

Almost surely, 2^25742315 is an apocalyptic number.

25742315 is a deficient number, since it is larger than the sum of its proper divisors (5148469).

25742315 is an equidigital number, since it uses as much as digits as its factorization.

25742315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5148468.

The product of its digits is 8400, while the sum is 29.

The square root of 25742315 is about 5073.6885004896. The cubic root of 25742315 is about 295.2676494600.

The spelling of 25742315 in words is "twenty-five million, seven hundred forty-two thousand, three hundred fifteen".