25172465 has 24 divisors (see below), whose sum is σ = 32702208. Its totient is φ = 18580320.

The previous prime is 25172449. The next prime is 25172471. The reversal of 25172465 is 56427152.

It is not a de Polignac number, because 25172465 - 2⁴ = 25172449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81842 + ... + 82148.

It is an arithmetic number, because the mean of its divisors is an integer number (1362592).

Almost surely, 2^25172465 is an apocalyptic number.

It is an amenable number.

25172465 is a deficient number, since it is larger than the sum of its proper divisors (7529743).

25172465 is a wasteful number, since it uses less digits than its factorization.

25172465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 366 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 25172465 is about 5017.2168579801. The cubic root of 25172465 is about 293.0726211679.

It can be divided in two parts, 251724 and 65, that multiplied together give a triangular number (16362060 = T₅₇₂₀).

The spelling of 25172465 in words is "twenty-five million, one hundred seventy-two thousand, four hundred sixty-five".