25457973 has 16 divisors (see below), whose sum is σ = 35168256. Its totient is φ = 16370480.

The previous prime is 25457963. The next prime is 25457977. The reversal of 25457973 is 37975452.

It is a cyclic number.

It is not a de Polignac number, because 25457973 - 2⁸ = 25457717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25457977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8740 + ... + 11282.

It is an arithmetic number, because the mean of its divisors is an integer number (2198016).

Almost surely, 2^25457973 is an apocalyptic number.

It is an amenable number.

25457973 is a deficient number, since it is larger than the sum of its proper divisors (9710283).

25457973 is a wasteful number, since it uses less digits than its factorization.

25457973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664.

The product of its digits is 264600, while the sum is 42.

The square root of 25457973 is about 5045.5894601127. The cubic root of 25457973 is about 294.1764755651.

The spelling of 25457973 in words is "twenty-five million, four hundred fifty-seven thousand, nine hundred seventy-three".