25331057 has 4 divisors (see below), whose sum is σ = 25462500. Its totient is φ = 25199616.

The previous prime is 25331029. The next prime is 25331063. The reversal of 25331057 is 75013352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8814961 + 16516096 = 2969^2 + 4064^2 .

It is a cyclic number.

It is not a de Polignac number, because 25331057 - 2⁸ = 25330801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25331087) 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, 65432 + ... + 65817.

It is an arithmetic number, because the mean of its divisors is an integer number (6365625).

Almost surely, 2^25331057 is an apocalyptic number.

It is an amenable number.

25331057 is a deficient number, since it is larger than the sum of its proper divisors (131443).

25331057 is a wasteful number, since it uses less digits than its factorization.

25331057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131442.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 25331057 is about 5032.9968209805. The cubic root of 25331057 is about 293.6868068683.

The spelling of 25331057 in words is "twenty-five million, three hundred thirty-one thousand, fifty-seven".