25561552 has 10 divisors (see below), whose sum is σ = 49525538. Its totient is φ = 12780768.

The previous prime is 25561541. The next prime is 25561553. The reversal of 25561552 is 25516552.

It can be written as a sum of positive squares in only one way, i.e., 16941456 + 8620096 = 4116^2 + 2936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25561553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798783 + ... + 798814.

Almost surely, 2^25561552 is an apocalyptic number.

It is an amenable number.

25561552 is a deficient number, since it is larger than the sum of its proper divisors (23963986).

25561552 is a wasteful number, since it uses less digits than its factorization.

25561552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597605 (or 1597599 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 25561552 is about 5055.8433520037. The cubic root of 25561552 is about 294.5749005031.

The spelling of 25561552 in words is "twenty-five million, five hundred sixty-one thousand, five hundred fifty-two".