25042507 has 4 divisors (see below), whose sum is σ = 28620016. Its totient is φ = 21465000.

The previous prime is 25042499. The next prime is 25042519. The reversal of 25042507 is 70524052.

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

It is a cyclic number.

It is not a de Polignac number, because 25042507 - 2³ = 25042499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25022507) 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, 1788744 + ... + 1788757.

It is an arithmetic number, because the mean of its divisors is an integer number (7155004).

Almost surely, 2^25042507 is an apocalyptic number.

25042507 is a deficient number, since it is larger than the sum of its proper divisors (3577509).

25042507 is an equidigital number, since it uses as much as digits as its factorization.

25042507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577508.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 25042507 is about 5004.2488946894. The cubic root of 25042507 is about 292.5674016148.

Adding to 25042507 its reverse (70524052), we get a palindrome (95566559).

The spelling of 25042507 in words is "twenty-five million, forty-two thousand, five hundred seven".