25263557 has 4 divisors (see below), whose sum is σ = 27560256. Its totient is φ = 22966860.

The previous prime is 25263551. The next prime is 25263571. The reversal of 25263557 is 75536252.

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 25263557 - 2⁴ = 25263541 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 (25263551) 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, 1148333 + ... + 1148354.

It is an arithmetic number, because the mean of its divisors is an integer number (6890064).

Almost surely, 2^25263557 is an apocalyptic number.

It is an amenable number.

25263557 is a deficient number, since it is larger than the sum of its proper divisors (2296699).

25263557 is a wasteful number, since it uses less digits than its factorization.

25263557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296698.

The product of its digits is 63000, while the sum is 35.

The square root of 25263557 is about 5026.2866014584. The cubic root of 25263557 is about 293.4257111196.

The spelling of 25263557 in words is "twenty-five million, two hundred sixty-three thousand, five hundred fifty-seven".