25229769 has 8 divisors (see below), whose sum is σ = 33718080. Its totient is φ = 16780656.

The previous prime is 25229761. The next prime is 25229773. The reversal of 25229769 is 96792252.

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

It is not a de Polignac number, because 25229769 - 2³ = 25229761 is a prime.

It is a super-2 number, since 2×25229769² = 1273082487586722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 25229769.

It is not an unprimeable number, because it can be changed into a prime (25229761) 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, 8262 + ... + 10895.

It is an arithmetic number, because the mean of its divisors is an integer number (4214760).

Almost surely, 2^25229769 is an apocalyptic number.

It is an amenable number.

25229769 is a deficient number, since it is larger than the sum of its proper divisors (8488311).

25229769 is a wasteful number, since it uses less digits than its factorization.

25229769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19599.

The product of its digits is 136080, while the sum is 42.

The square root of 25229769 is about 5022.9243474295. The cubic root of 25229769 is about 293.2948415689.

The spelling of 25229769 in words is "twenty-five million, two hundred twenty-nine thousand, seven hundred sixty-nine".