25735897 has 4 divisors (see below), whose sum is σ = 28075536. Its totient is φ = 23396260.

The previous prime is 25735877. The next prime is 25735901. The reversal of 25735897 is 79853752.

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 25735897 - 2¹⁹ = 25211609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25735817) 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, 1169803 + ... + 1169824.

It is an arithmetic number, because the mean of its divisors is an integer number (7018884).

Almost surely, 2^25735897 is an apocalyptic number.

It is an amenable number.

25735897 is a deficient number, since it is larger than the sum of its proper divisors (2339639).

25735897 is a wasteful number, since it uses less digits than its factorization.

25735897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339638.

The product of its digits is 529200, while the sum is 46.

The square root of 25735897 is about 5073.0559823444. The cubic root of 25735897 is about 295.2431089931.

The spelling of 25735897 in words is "twenty-five million, seven hundred thirty-five thousand, eight hundred ninety-seven".