25125945 has 32 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 12297984.

The previous prime is 25125901. The next prime is 25125973. The reversal of 25125945 is 54952152.

It is not a de Polignac number, because 25125945 - 2⁸ = 25125689 is a prime.

It is a super-2 number, since 2×25125945² = 1262626224286050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52216 + ... + 52694.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^25125945 is an apocalyptic number.

It is an amenable number.

25125945 is a deficient number, since it is larger than the sum of its proper divisors (18419655).

25125945 is a wasteful number, since it uses less digits than its factorization.

25125945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769.

The product of its digits is 18000, while the sum is 33.

The square root of 25125945 is about 5012.5786776868. The cubic root of 25125945 is about 292.8919721189.

The spelling of 25125945 in words is "twenty-five million, one hundred twenty-five thousand, nine hundred forty-five".