25420613 has 8 divisors (see below), whose sum is σ = 26862720. Its totient is φ = 23988960.

The previous prime is 25420601. The next prime is 25420621. The reversal of 25420613 is 31602452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25420613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25420643) 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, 2681 + ... + 7617.

It is an arithmetic number, because the mean of its divisors is an integer number (3357840).

Almost surely, 2^25420613 is an apocalyptic number.

It is an amenable number.

25420613 is a deficient number, since it is larger than the sum of its proper divisors (1442107).

25420613 is a wasteful number, since it uses less digits than its factorization.

25420613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25420613 is about 5041.8858574942. The cubic root of 25420613 is about 294.0325021528.

The spelling of 25420613 in words is "twenty-five million, four hundred twenty thousand, six hundred thirteen".