25752557 has 4 divisors (see below), whose sum is σ = 25764576. Its totient is φ = 25740540.

The previous prime is 25752539. The next prime is 25752563. The reversal of 25752557 is 75525752.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25752557 - 2¹² = 25748461 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 25752557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25755557) 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, 1823 + ... + 7404.

It is an arithmetic number, because the mean of its divisors is an integer number (6441144).

Almost surely, 2^25752557 is an apocalyptic number.

It is an amenable number.

25752557 is a deficient number, since it is larger than the sum of its proper divisors (12019).

25752557 is an equidigital number, since it uses as much as digits as its factorization.

25752557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12018.

The product of its digits is 122500, while the sum is 38.

The square root of 25752557 is about 5074.6977249882. The cubic root of 25752557 is about 295.3068032849.

The spelling of 25752557 in words is "twenty-five million, seven hundred fifty-two thousand, five hundred fifty-seven".