25155945 has 24 divisors (see below), whose sum is σ = 43804800. Its totient is φ = 13354656.

The previous prime is 25155941. The next prime is 25156003. The reversal of 25155945 is 54955152.

It is not a de Polignac number, because 25155945 - 2² = 25155941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25155941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9586 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (1825200).

Almost surely, 2^25155945 is an apocalyptic number.

It is an amenable number.

25155945 is a deficient number, since it is larger than the sum of its proper divisors (18648855).

25155945 is a wasteful number, since it uses less digits than its factorization.

25155945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589 (or 2586 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 25155945 is about 5015.5702567106. The cubic root of 25155945 is about 293.0084952904.

The spelling of 25155945 in words is "twenty-five million, one hundred fifty-five thousand, nine hundred forty-five".