25349393 has 4 divisors (see below), whose sum is σ = 26223540. Its totient is φ = 24475248.

The previous prime is 25349371. The next prime is 25349399. The reversal of 25349393 is 39394352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19114384 + 6235009 = 4372^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 25349393 - 2²⁰ = 24300817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25349399) 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, 437030 + ... + 437087.

It is an arithmetic number, because the mean of its divisors is an integer number (6555885).

Almost surely, 2^25349393 is an apocalyptic number.

It is an amenable number.

25349393 is a deficient number, since it is larger than the sum of its proper divisors (874147).

25349393 is an equidigital number, since it uses as much as digits as its factorization.

25349393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874146.

The product of its digits is 87480, while the sum is 38.

The square root of 25349393 is about 5034.8180701988. The cubic root of 25349393 is about 293.7576519510.

The spelling of 25349393 in words is "twenty-five million, three hundred forty-nine thousand, three hundred ninety-three".