25552657 has 8 divisors (see below), whose sum is σ = 27558440. Its totient is φ = 23552640.

The previous prime is 25552633. The next prime is 25552679. The reversal of 25552657 is 75625552.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4309776 + 21242881 = 2076^2 + 4609^2 .

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 25552657 - 2¹⁵ = 25519889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25552627) 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, 13807 + ... + 15547.

It is an arithmetic number, because the mean of its divisors is an integer number (3444805).

Almost surely, 2^25552657 is an apocalyptic number.

It is an amenable number.

25552657 is a deficient number, since it is larger than the sum of its proper divisors (2005783).

25552657 is a wasteful number, since it uses less digits than its factorization.

25552657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its digits is 105000, while the sum is 37.

The square root of 25552657 is about 5054.9636002646. The cubic root of 25552657 is about 294.5407274642.

The spelling of 25552657 in words is "twenty-five million, five hundred fifty-two thousand, six hundred fifty-seven".