25132945 has 4 divisors (see below), whose sum is σ = 30159540. Its totient is φ = 20106352.

The previous prime is 25132889. The next prime is 25132949. The reversal of 25132945 is 54923152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20061441 + 5071504 = 4479^2 + 2252^2 .

It is a cyclic number.

It is not a de Polignac number, because 25132945 - 2¹³ = 25124753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25132949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513290 + ... + 2513299.

It is an arithmetic number, because the mean of its divisors is an integer number (7539885).

Almost surely, 2^25132945 is an apocalyptic number.

It is an amenable number.

25132945 is a deficient number, since it is larger than the sum of its proper divisors (5026595).

25132945 is an equidigital number, since it uses as much as digits as its factorization.

25132945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026594.

The product of its digits is 10800, while the sum is 31.

The square root of 25132945 is about 5013.2768724658. The cubic root of 25132945 is about 292.9191691515.

The spelling of 25132945 in words is "twenty-five million, one hundred thirty-two thousand, nine hundred forty-five".