25898397 has 16 divisors (see below), whose sum is σ = 40210560. Its totient is φ = 14519232.

The previous prime is 25898393. The next prime is 25898401. The reversal of 25898397 is 79389852.

It is an interprime number because it is at equal distance from previous prime (25898393) and next prime (25898401).

It is not a de Polignac number, because 25898397 - 2² = 25898393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25898393) 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, 10522 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (2513160).

Almost surely, 2^25898397 is an apocalyptic number.

It is an amenable number.

25898397 is a deficient number, since it is larger than the sum of its proper divisors (14312163).

25898397 is a wasteful number, since it uses less digits than its factorization.

25898397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23332.

The product of its digits is 1088640, while the sum is 51.

The square root of 25898397 is about 5089.0467673229. The cubic root of 25898397 is about 295.8632075806.

The spelling of 25898397 in words is "twenty-five million, eight hundred ninety-eight thousand, three hundred ninety-seven".