25261553 has 4 divisors (see below), whose sum is σ = 25381488. Its totient is φ = 25141620.

The previous prime is 25261547. The next prime is 25261571. The reversal of 25261553 is 35516252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25261553 - 2⁸ = 25261297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25261543) 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 3 ways as a sum of consecutive naturals, for example, 59651 + ... + 60072.

It is an arithmetic number, because the mean of its divisors is an integer number (6345372).

Almost surely, 2^25261553 is an apocalyptic number.

It is an amenable number.

25261553 is a deficient number, since it is larger than the sum of its proper divisors (119935).

25261553 is a wasteful number, since it uses less digits than its factorization.

25261553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119934.

The product of its digits is 9000, while the sum is 29.

The square root of 25261553 is about 5026.0872455619. The cubic root of 25261553 is about 293.4179523722.

The spelling of 25261553 in words is "twenty-five million, two hundred sixty-one thousand, five hundred fifty-three".