25630051 has 4 divisors (see below), whose sum is σ = 25725600. Its totient is φ = 25534504.

The previous prime is 25630039. The next prime is 25630057. The reversal of 25630051 is 15003652.

It is a happy number.

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 25630051 - 2¹³ = 25621859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25630057) 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, 47371 + ... + 47908.

It is an arithmetic number, because the mean of its divisors is an integer number (6431400).

Almost surely, 2^25630051 is an apocalyptic number.

25630051 is a deficient number, since it is larger than the sum of its proper divisors (95549).

25630051 is an equidigital number, since it uses as much as digits as its factorization.

25630051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95548.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 25630051 is about 5062.6130604659. The cubic root of 25630051 is about 294.8377964950.

The spelling of 25630051 in words is "twenty-five million, six hundred thirty thousand, fifty-one".