25297029 has 32 divisors (see below), whose sum is σ = 38966400. Its totient is φ = 16411248.

The previous prime is 25297021. The next prime is 25297031. The reversal of 25297029 is 92079252.

It is not a de Polignac number, because 25297029 - 2³ = 25297021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25296984 and 25297002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25297021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93907 + ... + 94175.

It is an arithmetic number, because the mean of its divisors is an integer number (1217700).

Almost surely, 2^25297029 is an apocalyptic number.

It is an amenable number.

25297029 is a deficient number, since it is larger than the sum of its proper divisors (13669371).

25297029 is an frugal number, since it uses more digits than its factorization.

25297029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 25297029 is about 5029.6151940283. The cubic root of 25297029 is about 293.5552417188. Note that the first 3 decimals are identical.

The spelling of 25297029 in words is "twenty-five million, two hundred ninety-seven thousand, twenty-nine".