25264765 has 8 divisors (see below), whose sum is σ = 30372408. Its totient is φ = 20175360.

The previous prime is 25264751. The next prime is 25264777. The reversal of 25264765 is 56746252.

It can be written as a sum of positive squares in 4 ways, for example, as 3334276 + 21930489 = 1826^2 + 4683^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-25264765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (3796551).

Almost surely, 2^25264765 is an apocalyptic number.

It is an amenable number.

25264765 is a deficient number, since it is larger than the sum of its proper divisors (5107643).

25264765 is an equidigital number, since it uses as much as digits as its factorization.

25264765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9119.

The product of its digits is 100800, while the sum is 37.

The square root of 25264765 is about 5026.4067682590. The cubic root of 25264765 is about 293.4303878510.

The spelling of 25264765 in words is "twenty-five million, two hundred sixty-four thousand, seven hundred sixty-five".