25229971 has 8 divisors (see below), whose sum is σ = 28108080. Its totient is φ = 22485792.

The previous prime is 25229957. The next prime is 25229999. The reversal of 25229971 is 17992252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25229971 - 2⁷ = 25229843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25229971.

It is not an unprimeable number, because it can be changed into a prime (25229951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33085 + ... + 33838.

It is an arithmetic number, because the mean of its divisors is an integer number (3513510).

Almost surely, 2^25229971 is an apocalyptic number.

25229971 is a deficient number, since it is larger than the sum of its proper divisors (2878109).

25229971 is a wasteful number, since it uses less digits than its factorization.

25229971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66965.

The product of its digits is 22680, while the sum is 37.

The square root of 25229971 is about 5022.9444551976. The cubic root of 25229971 is about 293.2956243135.

The spelling of 25229971 in words is "twenty-five million, two hundred twenty-nine thousand, nine hundred seventy-one".