25001051 has 4 divisors (see below), whose sum is σ = 25317600. Its totient is φ = 24684504.

The previous prime is 25001047. The next prime is 25001057. The reversal of 25001051 is 15010052.

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 25001051 - 2² = 25001047 is a prime.

It is a super-2 number, since 2×25001051² = 1250105102209202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25001057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158156 + ... + 158313.

It is an arithmetic number, because the mean of its divisors is an integer number (6329400).

Almost surely, 2^25001051 is an apocalyptic number.

25001051 is a deficient number, since it is larger than the sum of its proper divisors (316549).

25001051 is an equidigital number, since it uses as much as digits as its factorization.

25001051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316548.

The product of its (nonzero) digits is 50, while the sum is 14.

The square root of 25001051 is about 5000.1050988954. The cubic root of 25001051 is about 292.4058712874.

Subtracting from 25001051 its reverse (15010052), we obtain a palindrome (9990999).

The spelling of 25001051 in words is "twenty-five million, one thousand, fifty-one".