25572690 has 96 divisors (see below), whose sum is σ = 78152256. Its totient is φ = 5719680.

The previous prime is 25572683. The next prime is 25572697. The reversal of 25572690 is 9627552.

25572690 is a `hidden beast` number, since 25 + 572 + 69 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (25572683) and next prime (25572697).

It is a super-2 number, since 2×25572690² = 1307924947672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25572697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11877 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (814086).

Almost surely, 2^25572690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25572690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39076128).

25572690 is an abundant number, since it is smaller than the sum of its proper divisors (52579566).

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

25572690 is a wasteful number, since it uses less digits than its factorization.

25572690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 25572690 is about 5056.9447297751. The cubic root of 25572690 is about 294.6176795802.

It can be divided in two parts, 25572 and 690, that added together give a palindrome (26262).

The spelling of 25572690 in words is "twenty-five million, five hundred seventy-two thousand, six hundred ninety".