25022490 has 64 divisors (see below), whose sum is σ = 62277120. Its totient is φ = 6431040.

The previous prime is 25022489. The next prime is 25022497. The reversal of 25022490 is 9422052.

It is a super-2 number, since 2×25022490² = 1252250011600200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25022490.

It is not an unprimeable number, because it can be changed into a prime (25022497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118485 + ... + 118695.

It is an arithmetic number, because the mean of its divisors is an integer number (973080).

Almost surely, 2^25022490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25022490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31138560).

25022490 is an abundant number, since it is smaller than the sum of its proper divisors (37254630).

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

25022490 is a wasteful number, since it uses less digits than its factorization.

25022490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25022490 is about 5002.2484944273. The cubic root of 25022490 is about 292.4894290869.

The spelling of 25022490 in words is "twenty-five million, twenty-two thousand, four hundred ninety".