25251151 has 4 divisors (see below), whose sum is σ = 25280632. Its totient is φ = 25221672.

The previous prime is 25251139. The next prime is 25251181. The reversal of 25251151 is 15115252.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25251151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25251101) 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, 13416 + ... + 15181.

It is an arithmetic number, because the mean of its divisors is an integer number (6320158).

Almost surely, 2^25251151 is an apocalyptic number.

25251151 is a deficient number, since it is larger than the sum of its proper divisors (29481).

25251151 is an equidigital number, since it uses as much as digits as its factorization.

25251151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29480.

The product of its digits is 500, while the sum is 22.

The square root of 25251151 is about 5025.0523380359. The cubic root of 25251151 is about 293.3776730781.

The spelling of 25251151 in words is "twenty-five million, two hundred fifty-one thousand, one hundred fifty-one".