25442907 has 12 divisors (see below), whose sum is σ = 39462696. Its totient is φ = 14538720.

The previous prime is 25442891. The next prime is 25442927. The reversal of 25442907 is 70924452.

It is not a de Polignac number, because 25442907 - 2⁴ = 25442891 is a prime.

It is a super-2 number, since 2×25442907² = 1294683033221298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25442927) 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, 86394 + ... + 86687.

It is an arithmetic number, because the mean of its divisors is an integer number (3288558).

Almost surely, 2^25442907 is an apocalyptic number.

25442907 is a deficient number, since it is larger than the sum of its proper divisors (14019789).

25442907 is a wasteful number, since it uses less digits than its factorization.

25442907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173098 (or 173091 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25442907 is about 5044.0962520555. The cubic root of 25442907 is about 294.1184330104.

The spelling of 25442907 in words is "twenty-five million, four hundred forty-two thousand, nine hundred seven".