25256929 has 4 divisors (see below), whose sum is σ = 25350400. Its totient is φ = 25163460.

The previous prime is 25256927. The next prime is 25256963. The reversal of 25256929 is 92965252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25256929 - 2¹ = 25256927 is a prime.

It is a super-2 number, since 2×25256929² = 1275824925022082, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25256891 and 25256900.

It is not an unprimeable number, because it can be changed into a prime (25256927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46329 + ... + 46870.

It is an arithmetic number, because the mean of its divisors is an integer number (6337600).

Almost surely, 2^25256929 is an apocalyptic number.

It is an amenable number.

25256929 is a deficient number, since it is larger than the sum of its proper divisors (93471).

25256929 is an equidigital number, since it uses as much as digits as its factorization.

25256929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93470.

The product of its digits is 97200, while the sum is 40.

The square root of 25256929 is about 5025.6272245363. The cubic root of 25256929 is about 293.4000483871.

The spelling of 25256929 in words is "twenty-five million, two hundred fifty-six thousand, nine hundred twenty-nine".