25075945 has 4 divisors (see below), whose sum is σ = 30091140. Its totient is φ = 20060752.

The previous prime is 25075927. The next prime is 25075949. The reversal of 25075945 is 54957052.

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 18455616 + 6620329 = 4296^2 + 2573^2 .

It is a cyclic number.

It is not a de Polignac number, because 25075945 - 2⁵ = 25075913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25075949) 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, 2507590 + ... + 2507599.

It is an arithmetic number, because the mean of its divisors is an integer number (7522785).

Almost surely, 2^25075945 is an apocalyptic number.

It is an amenable number.

25075945 is a deficient number, since it is larger than the sum of its proper divisors (5015195).

25075945 is an equidigital number, since it uses as much as digits as its factorization.

25075945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015194.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 25075945 is about 5007.5887411009. The cubic root of 25075945 is about 292.6975605457.

The spelling of 25075945 in words is "twenty-five million, seventy-five thousand, nine hundred forty-five".