25117051 has 4 divisors (see below), whose sum is σ = 25729704. Its totient is φ = 24504400.

The previous prime is 25117039. The next prime is 25117061. The reversal of 25117051 is 15071152.

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 25117051 - 2⁵ = 25117019 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25117021) 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, 306265 + ... + 306346.

It is an arithmetic number, because the mean of its divisors is an integer number (6432426).

Almost surely, 2^25117051 is an apocalyptic number.

25117051 is a deficient number, since it is larger than the sum of its proper divisors (612653).

25117051 is an equidigital number, since it uses as much as digits as its factorization.

25117051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612652.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 25117051 is about 5011.6914310440. The cubic root of 25117051 is about 292.8574090590.

The spelling of 25117051 in words is "twenty-five million, one hundred seventeen thousand, fifty-one".