25057506 has 16 divisors (see below), whose sum is σ = 50176800. Its totient is φ = 8342208.

The previous prime is 25057471. The next prime is 25057553. The reversal of 25057506 is 60575052.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3985 + ... + 8123.

It is an arithmetic number, because the mean of its divisors is an integer number (3136050).

Almost surely, 2^25057506 is an apocalyptic number.

25057506 is an abundant number, since it is smaller than the sum of its proper divisors (25119294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25057506 is a wasteful number, since it uses less digits than its factorization.

25057506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 25057506 is about 5005.7472968579. The cubic root of 25057506 is about 292.6258002229.

It can be divided in two parts, 2505 and 7506, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 25057506 in words is "twenty-five million, fifty-seven thousand, five hundred six".