25562157 has 4 divisors (see below), whose sum is σ = 34082880. Its totient is φ = 17041436.

The previous prime is 25562123. The next prime is 25562171. The reversal of 25562157 is 75126552.

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 25562157 - 2⁷ = 25562029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25562107) 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, 4260357 + ... + 4260362.

It is an arithmetic number, because the mean of its divisors is an integer number (8520720).

Almost surely, 2^25562157 is an apocalyptic number.

It is an amenable number.

25562157 is a deficient number, since it is larger than the sum of its proper divisors (8520723).

25562157 is an equidigital number, since it uses as much as digits as its factorization.

25562157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520722.

The product of its digits is 21000, while the sum is 33.

The square root of 25562157 is about 5055.9031834085. The cubic root of 25562157 is about 294.5772245196.

The spelling of 25562157 in words is "twenty-five million, five hundred sixty-two thousand, one hundred fifty-seven".