25420315 has 8 divisors (see below), whose sum is σ = 30547440. Its totient is φ = 20307552.

The previous prime is 25420277. The next prime is 25420319. The reversal of 25420315 is 51302452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25420315 - 2¹⁵ = 25387547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25420319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796 + ... + 7174.

It is an arithmetic number, because the mean of its divisors is an integer number (3818430).

Almost surely, 2^25420315 is an apocalyptic number.

25420315 is a deficient number, since it is larger than the sum of its proper divisors (5127125).

25420315 is an equidigital number, since it uses as much as digits as its factorization.

25420315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7181.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25420315 is about 5041.8563049734. The cubic root of 25420315 is about 294.0313531898.

Adding to 25420315 its reverse (51302452), we get a palindrome (76722767).

The spelling of 25420315 in words is "twenty-five million, four hundred twenty thousand, three hundred fifteen".