25213397 has 16 divisors (see below), whose sum is σ = 29538432. Its totient is φ = 21265920.

The previous prime is 25213393. The next prime is 25213421. The reversal of 25213397 is 79331252.

It is a cyclic number.

It is not a de Polignac number, because 25213397 - 2² = 25213393 is a prime.

It is a super-3 number, since 3×25213397³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25213393) 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, 12728 + ... + 14574.

It is an arithmetic number, because the mean of its divisors is an integer number (1846152).

Almost surely, 2^25213397 is an apocalyptic number.

It is an amenable number.

25213397 is a deficient number, since it is larger than the sum of its proper divisors (4325035).

25213397 is a wasteful number, since it uses less digits than its factorization.

25213397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948.

The product of its digits is 11340, while the sum is 32.

The square root of 25213397 is about 5021.2943550443. The cubic root of 25213397 is about 293.2313866058.

The spelling of 25213397 in words is "twenty-five million, two hundred thirteen thousand, three hundred ninety-seven".