25249572 has 18 divisors (see below), whose sum is σ = 63825398. Its totient is φ = 8416512.

The previous prime is 25249559. The next prime is 25249579. The reversal of 25249572 is 27594252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24860196 + 389376 = 4986^2 + 624^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 701377 = 25249572 / (2 + 5 + 2 + 4 + 9 + 5 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25249579) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350653 + ... + 350724.

Almost surely, 2^25249572 is an apocalyptic number.

It is an amenable number.

25249572 is an abundant number, since it is smaller than the sum of its proper divisors (38575826).

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

25249572 is a wasteful number, since it uses less digits than its factorization.

25249572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701387 (or 701382 counting only the distinct ones).

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

The square root of 25249572 is about 5024.8952227882. The cubic root of 25249572 is about 293.3715578057.

The spelling of 25249572 in words is "twenty-five million, two hundred forty-nine thousand, five hundred seventy-two".