25784525 has 12 divisors (see below), whose sum is σ = 34432692. Its totient is φ = 19040640.

The previous prime is 25784513. The next prime is 25784533. The reversal of 25784525 is 52548752.

It can be written as a sum of positive squares in 6 ways, for example, as 7414729 + 18369796 = 2723^2 + 4286^2 .

It is not a de Polignac number, because 25784525 - 2¹² = 25780429 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 39344 + ... + 39993.

It is an arithmetic number, because the mean of its divisors is an integer number (2869391).

Almost surely, 2^25784525 is an apocalyptic number.

25784525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25784525 is a deficient number, since it is larger than the sum of its proper divisors (8648167).

25784525 is a wasteful number, since it uses less digits than its factorization.

25784525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79360 (or 79355 counting only the distinct ones).

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

The square root of 25784525 is about 5077.8464923627. The cubic root of 25784525 is about 295.4289460338.

The spelling of 25784525 in words is "twenty-five million, seven hundred eighty-four thousand, five hundred twenty-five".