25425099 has 24 divisors (see below), whose sum is σ = 42112512. Its totient is φ = 14479920.

The previous prime is 25425089. The next prime is 25425109. The reversal of 25425099 is 99052452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25425089) and next prime (25425109).

It is not a de Polignac number, because 25425099 - 2⁵ = 25425067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25425079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27454 + ... + 28364.

It is an arithmetic number, because the mean of its divisors is an integer number (1754688).

Almost surely, 2^25425099 is an apocalyptic number.

25425099 is a deficient number, since it is larger than the sum of its proper divisors (16687413).

25425099 is a wasteful number, since it uses less digits than its factorization.

25425099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 25425099 is about 5042.3307110899. The cubic root of 25425099 is about 294.0497972015.

The spelling of 25425099 in words is "twenty-five million, four hundred twenty-five thousand, ninety-nine".