25560557 has 8 divisors (see below), whose sum is σ = 27927840. Its totient is φ = 23200560.

The previous prime is 25560541. The next prime is 25560559. The reversal of 25560557 is 75506552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25560557 - 2⁴ = 25560541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25560559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7718 + ... + 10520.

It is an arithmetic number, because the mean of its divisors is an integer number (3490980).

Almost surely, 2^25560557 is an apocalyptic number.

It is an amenable number.

25560557 is a deficient number, since it is larger than the sum of its proper divisors (2367283).

25560557 is a wasteful number, since it uses less digits than its factorization.

25560557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643.

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 25560557 is about 5055.7449500543. The cubic root of 25560557 is about 294.5710782804.

The spelling of 25560557 in words is "twenty-five million, five hundred sixty thousand, five hundred fifty-seven".