25422399 has 12 divisors (see below), whose sum is σ = 38654200. Its totient is φ = 16056144.

The previous prime is 25422379. The next prime is 25422427. The reversal of 25422399 is 99322452.

25422399 is a `hidden beast` number, since 2 + 542 + 23 + 99 = 666.

It is not a de Polignac number, because 25422399 - 2¹² = 25418303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25422329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74164 + ... + 74505.

Almost surely, 2^25422399 is an apocalyptic number.

25422399 is a deficient number, since it is larger than the sum of its proper divisors (13231801).

25422399 is a wasteful number, since it uses less digits than its factorization.

25422399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148694 (or 148691 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 25422399 is about 5042.0629706500. The cubic root of 25422399 is about 294.0393880312.

The spelling of 25422399 in words is "twenty-five million, four hundred twenty-two thousand, three hundred ninety-nine".