25260551 has 4 divisors (see below), whose sum is σ = 25876704. Its totient is φ = 24644400.

The previous prime is 25260539. The next prime is 25260563. The reversal of 25260551 is 15506252.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25260539) and next prime (25260563).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25260551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25260551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25260581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308015 + ... + 308096.

It is an arithmetic number, because the mean of its divisors is an integer number (6469176).

Almost surely, 2^25260551 is an apocalyptic number.

25260551 is a deficient number, since it is larger than the sum of its proper divisors (616153).

25260551 is an equidigital number, since it uses as much as digits as its factorization.

25260551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616152.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25260551 is about 5025.9875646484. The cubic root of 25260551 is about 293.4140728446.

The spelling of 25260551 in words is "twenty-five million, two hundred sixty thousand, five hundred fifty-one".