25420651 has 8 divisors (see below), whose sum is σ = 27622400. Its totient is φ = 23305320.

The previous prime is 25420643. The next prime is 25420657. The reversal of 25420651 is 15602452.

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 25420651 - 2³ = 25420643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25420657) 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, 20991 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (3452800).

Almost surely, 2^25420651 is an apocalyptic number.

25420651 is a deficient number, since it is larger than the sum of its proper divisors (2201749).

25420651 is a wasteful number, since it uses less digits than its factorization.

25420651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43209.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 25420651 is about 5041.8896259240. The cubic root of 25420651 is about 294.0326486642.

The spelling of 25420651 in words is "twenty-five million, four hundred twenty thousand, six hundred fifty-one".