25264731 has 4 divisors (see below), whose sum is σ = 33686312. Its totient is φ = 16843152.

The previous prime is 25264691. The next prime is 25264739. The reversal of 25264731 is 13746252.

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

It is not a de Polignac number, because 25264731 - 2⁹ = 25264219 is a prime.

It is a super-2 number, since 2×25264731² = 1276613265004722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25264739) 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, 4210786 + ... + 4210791.

It is an arithmetic number, because the mean of its divisors is an integer number (8421578).

Almost surely, 2^25264731 is an apocalyptic number.

25264731 is a deficient number, since it is larger than the sum of its proper divisors (8421581).

25264731 is an equidigital number, since it uses as much as digits as its factorization.

25264731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8421580.

The product of its digits is 10080, while the sum is 30.

The square root of 25264731 is about 5026.4033861201. The cubic root of 25264731 is about 293.4302562232.

The spelling of 25264731 in words is "twenty-five million, two hundred sixty-four thousand, seven hundred thirty-one".