25953497 has 4 divisors (see below), whose sum is σ = 25975716. Its totient is φ = 25931280.

The previous prime is 25953493. The next prime is 25953511. The reversal of 25953497 is 79435952.

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 16491721 + 9461776 = 4061^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 25953497 - 2² = 25953493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25953491) 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, 9254 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (6493929).

Almost surely, 2^25953497 is an apocalyptic number.

It is an amenable number.

25953497 is a deficient number, since it is larger than the sum of its proper divisors (22219).

25953497 is a wasteful number, since it uses less digits than its factorization.

25953497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22218.

The product of its digits is 340200, while the sum is 44.

The square root of 25953497 is about 5094.4574784760. The cubic root of 25953497 is about 296.0728796987.

The spelling of 25953497 in words is "twenty-five million, nine hundred fifty-three thousand, four hundred ninety-seven".