25603057 has 4 divisors (see below), whose sum is σ = 25646400. Its totient is φ = 25559716.

The previous prime is 25603049. The next prime is 25603079. The reversal of 25603057 is 75030652.

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 25603057 - 2³ = 25603049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25603007) 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, 20773 + ... + 21970.

It is an arithmetic number, because the mean of its divisors is an integer number (6411600).

Almost surely, 2^25603057 is an apocalyptic number.

It is an amenable number.

25603057 is a deficient number, since it is larger than the sum of its proper divisors (43343).

25603057 is an equidigital number, since it uses as much as digits as its factorization.

25603057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43342.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 25603057 is about 5059.9463435890. The cubic root of 25603057 is about 294.7342507621.

The spelling of 25603057 in words is "twenty-five million, six hundred three thousand, fifty-seven".