25251011 has 4 divisors (see below), whose sum is σ = 25665024. Its totient is φ = 24837000.

The previous prime is 25250999. The next prime is 25251013. The reversal of 25251011 is 11015252.

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 25251011 - 2⁶ = 25250947 is a prime.

It is a super-2 number, since 2×25251011² = 1275227113044242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25251013) 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, 206915 + ... + 207036.

It is an arithmetic number, because the mean of its divisors is an integer number (6416256).

Almost surely, 2^25251011 is an apocalyptic number.

25251011 is a deficient number, since it is larger than the sum of its proper divisors (414013).

25251011 is an equidigital number, since it uses as much as digits as its factorization.

25251011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414012.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 25251011 is about 5025.0384078134. The cubic root of 25251011 is about 293.3771308857.

Adding to 25251011 its reverse (11015252), we get a palindrome (36266263).

The spelling of 25251011 in words is "twenty-five million, two hundred fifty-one thousand, eleven".