25906465 has 16 divisors (see below), whose sum is σ = 34299216. Its totient is φ = 18662400.

The previous prime is 25906451. The next prime is 25906477. The reversal of 25906465 is 56460952.

It can be written as a sum of positive squares in 8 ways, for example, as 14930496 + 10975969 = 3864^2 + 3313^2 .

It is not a de Polignac number, because 25906465 - 2¹⁵ = 25873697 is a prime.

It is a super-2 number, since 2×25906465² = 1342289857592450, which contains 22 as substring.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 2196 + ... + 7525.

It is an arithmetic number, because the mean of its divisors is an integer number (2143701).

Almost surely, 2^25906465 is an apocalyptic number.

It is an amenable number.

25906465 is a deficient number, since it is larger than the sum of its proper divisors (8392751).

25906465 is a wasteful number, since it uses less digits than its factorization.

25906465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9780.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 25906465 is about 5089.8393884287. The cubic root of 25906465 is about 295.8939273266.

The spelling of 25906465 in words is "twenty-five million, nine hundred six thousand, four hundred sixty-five".