25765572 has 72 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 7103040.

The previous prime is 25765561. The next prime is 25765609. The reversal of 25765572 is 27556752.

It is a self number, because there is not a number n which added to its sum of digits gives 25765572.

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, 16297 + ... + 17807.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^25765572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25765572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36197280).

25765572 is an abundant number, since it is smaller than the sum of its proper divisors (46628988).

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

25765572 is a wasteful number, since it uses less digits than its factorization.

25765572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1552 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 25765572 is about 5075.9799053976. The cubic root of 25765572 is about 295.3565429510.

The spelling of 25765572 in words is "twenty-five million, seven hundred sixty-five thousand, five hundred seventy-two".