25456715 has 4 divisors (see below), whose sum is σ = 30548064. Its totient is φ = 20365368.

The previous prime is 25456709. The next prime is 25456721. The reversal of 25456715 is 51765452.

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

It is an interprime number because it is at equal distance from previous prime (25456709) and next prime (25456721).

It is a cyclic number.

It is not a de Polignac number, because 25456715 - 2¹² = 25452619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545667 + ... + 2545676.

It is an arithmetic number, because the mean of its divisors is an integer number (7637016).

Almost surely, 2^25456715 is an apocalyptic number.

25456715 is a deficient number, since it is larger than the sum of its proper divisors (5091349).

25456715 is an equidigital number, since it uses as much as digits as its factorization.

25456715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091348.

The product of its digits is 42000, while the sum is 35.

The square root of 25456715 is about 5045.4647952394. The cubic root of 25456715 is about 294.1716299305.

The spelling of 25456715 in words is "twenty-five million, four hundred fifty-six thousand, seven hundred fifteen".