25219902 has 16 divisors (see below), whose sum is σ = 50940432. Its totient is φ = 8323200.

The previous prime is 25219861. The next prime is 25219907. The reversal of 25219902 is 20991252.

It is a self number, because there is not a number n which added to its sum of digits gives 25219902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25219907) 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, 20203 + ... + 21414.

It is an arithmetic number, because the mean of its divisors is an integer number (3183777).

Almost surely, 2^25219902 is an apocalyptic number.

25219902 is an abundant number, since it is smaller than the sum of its proper divisors (25720530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25219902 is a wasteful number, since it uses less digits than its factorization.

25219902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41723.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 25219902 is about 5021.9420546239. The cubic root of 25219902 is about 293.2566021179.

The spelling of 25219902 in words is "twenty-five million, two hundred nineteen thousand, nine hundred two".