25452570 has 128 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 5345280.

The previous prime is 25452569. The next prime is 25452589. The reversal of 25452570 is 7525452.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72756 + ... + 73104.

It is an arithmetic number, because the mean of its divisors is an integer number (595350).

Almost surely, 2^25452570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25452570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38102400).

25452570 is an abundant number, since it is smaller than the sum of its proper divisors (50752230).

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

25452570 is a wasteful number, since it uses less digits than its factorization.

25452570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 25452570 is about 5045.0540135860. The cubic root of 25452570 is about 294.1556628587.

It can be divided in two parts, 2545 and 2570, that added together give a palindrome (5115).

The spelling of 25452570 in words is "twenty-five million, four hundred fifty-two thousand, five hundred seventy".