25772897 has 4 divisors (see below), whose sum is σ = 25786800. Its totient is φ = 25758996.

The previous prime is 25772891. The next prime is 25772921. The reversal of 25772897 is 79827752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25772897 - 2¹⁰ = 25771873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25772891) 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, 3647 + ... + 8052.

It is an arithmetic number, because the mean of its divisors is an integer number (6446700).

Almost surely, 2^25772897 is an apocalyptic number.

It is an amenable number.

25772897 is a deficient number, since it is larger than the sum of its proper divisors (13903).

25772897 is a wasteful number, since it uses less digits than its factorization.

25772897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13902.

The product of its digits is 493920, while the sum is 47.

The square root of 25772897 is about 5076.7013896821. The cubic root of 25772897 is about 295.3845296728.

The spelling of 25772897 in words is "twenty-five million, seven hundred seventy-two thousand, eight hundred ninety-seven".