25578245 has 24 divisors (see below), whose sum is σ = 38955168. Its totient is φ = 15943200.

The previous prime is 25578233. The next prime is 25578253. The reversal of 25578245 is 54287552.

It is not a de Polignac number, because 25578245 - 2⁴ = 25578229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25578199 and 25578208.

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, 2051 + ... + 7440.

It is an arithmetic number, because the mean of its divisors is an integer number (1623132).

Almost surely, 2^25578245 is an apocalyptic number.

It is an amenable number.

25578245 is a deficient number, since it is larger than the sum of its proper divisors (13376923).

25578245 is a wasteful number, since it uses less digits than its factorization.

25578245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9521 (or 9514 counting only the distinct ones).

The product of its digits is 112000, while the sum is 38.

The square root of 25578245 is about 5057.4939446331. The cubic root of 25578245 is about 294.6390107050.

The spelling of 25578245 in words is "twenty-five million, five hundred seventy-eight thousand, two hundred forty-five".