25231394 has 4 divisors (see below), whose sum is σ = 37847094. Its totient is φ = 12615696.

The previous prime is 25231361. The next prime is 25231397. The reversal of 25231394 is 49313252.

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

It can be written as a sum of positive squares in only one way, i.e., 19918369 + 5313025 = 4463^2 + 2305^2 .

It is not an unprimeable number, because it can be changed into a prime (25231397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6307847 + ... + 6307850.

Almost surely, 2^25231394 is an apocalyptic number.

25231394 is a deficient number, since it is larger than the sum of its proper divisors (12615700).

25231394 is a wasteful number, since it uses less digits than its factorization.

25231394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12615699.

The product of its digits is 6480, while the sum is 29.

The square root of 25231394 is about 5023.0861031840. The cubic root of 25231394 is about 293.3011382824.

The spelling of 25231394 in words is "twenty-five million, two hundred thirty-one thousand, three hundred ninety-four".