25723057 has 4 divisors (see below), whose sum is σ = 27236196. Its totient is φ = 24209920.

The previous prime is 25723043. The next prime is 25723097. The reversal of 25723057 is 75032752.

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 18800896 + 6922161 = 4336^2 + 2631^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25723057 is a prime.

It is a super-2 number, since 2×25723057² = 1323351322850498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25723007) 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, 756544 + ... + 756577.

It is an arithmetic number, because the mean of its divisors is an integer number (6809049).

Almost surely, 2^25723057 is an apocalyptic number.

It is an amenable number.

25723057 is a deficient number, since it is larger than the sum of its proper divisors (1513139).

25723057 is a wasteful number, since it uses less digits than its factorization.

25723057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513138.

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 25723057 is about 5071.7903150663. The cubic root of 25723057 is about 295.1940005158.

The spelling of 25723057 in words is "twenty-five million, seven hundred twenty-three thousand, fifty-seven".