25229949 has 8 divisors (see below), whose sum is σ = 34422432. Its totient is φ = 16428720.

The previous prime is 25229933. The next prime is 25229951. The reversal of 25229949 is 94992252.

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

It is not a de Polignac number, because 25229949 - 2⁴ = 25229933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25229949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25229909) 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, 97662 + ... + 97919.

It is an arithmetic number, because the mean of its divisors is an integer number (4302804).

Almost surely, 2^25229949 is an apocalyptic number.

It is an amenable number.

25229949 is a deficient number, since it is larger than the sum of its proper divisors (9192483).

25229949 is a wasteful number, since it uses less digits than its factorization.

25229949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195627.

The product of its digits is 116640, while the sum is 42.

The square root of 25229949 is about 5022.9422652465. The cubic root of 25229949 is about 293.2955390643.

The spelling of 25229949 in words is "twenty-five million, two hundred twenty-nine thousand, nine hundred forty-nine".