25723915 has 16 divisors (see below), whose sum is σ = 35646912. Its totient is φ = 17455104.

The previous prime is 25723909. The next prime is 25723927. The reversal of 25723915 is 51932752.

It is a cyclic number.

It is not a de Polignac number, because 25723915 - 2¹⁵ = 25691147 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, 394 + ... + 7183.

It is an arithmetic number, because the mean of its divisors is an integer number (2227932).

Almost surely, 2^25723915 is an apocalyptic number.

25723915 is a deficient number, since it is larger than the sum of its proper divisors (9922997).

25723915 is an equidigital number, since it uses as much as digits as its factorization.

25723915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686.

The product of its digits is 18900, while the sum is 34.

The square root of 25723915 is about 5071.8748998768. The cubic root of 25723915 is about 295.1972825730.

The spelling of 25723915 in words is "twenty-five million, seven hundred twenty-three thousand, nine hundred fifteen".