25494570 has 48 divisors (see below), whose sum is σ = 66629160. Its totient is φ = 6763392.

The previous prime is 25494563. The next prime is 25494583. The reversal of 25494570 is 7549452.

25494570 is a `hidden beast` number, since 2 + 549 + 45 + 70 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25371369 + 123201 = 5037^2 + 351^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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, 19992 + ... + 21228.

Almost surely, 2^25494570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25494570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33314580).

25494570 is an abundant number, since it is smaller than the sum of its proper divisors (41134590).

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

25494570 is a wasteful number, since it uses less digits than its factorization.

25494570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25494570 is about 5049.2147904402. The cubic root of 25494570 is about 294.3173721155.

The spelling of 25494570 in words is "twenty-five million, four hundred ninety-four thousand, five hundred seventy".