25351457 has 4 divisors (see below), whose sum is σ = 25365780. Its totient is φ = 25337136.

The previous prime is 25351433. The next prime is 25351463. The reversal of 25351457 is 75415352.

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 7845601 + 17505856 = 2801^2 + 4184^2 .

It is a cyclic number.

It is not a de Polignac number, because 25351457 - 2⁸ = 25351201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25351427) 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, 4058 + ... + 8195.

It is an arithmetic number, because the mean of its divisors is an integer number (6341445).

Almost surely, 2^25351457 is an apocalyptic number.

It is an amenable number.

25351457 is a deficient number, since it is larger than the sum of its proper divisors (14323).

25351457 is a wasteful number, since it uses less digits than its factorization.

25351457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14322.

The product of its digits is 21000, while the sum is 32.

The square root of 25351457 is about 5035.0230386762. The cubic root of 25351457 is about 293.7656245198.

The spelling of 25351457 in words is "twenty-five million, three hundred fifty-one thousand, four hundred fifty-seven".