25163994 has 16 divisors (see below), whose sum is σ = 51079968. Its totient is φ = 8262672.

The previous prime is 25163993. The next prime is 25164011. The reversal of 25163994 is 49936152.

It is not an unprimeable number, because it can be changed into a prime (25163993) 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, 30897 + ... + 31700.

It is an arithmetic number, because the mean of its divisors is an integer number (3192498).

Almost surely, 2^25163994 is an apocalyptic number.

25163994 is an abundant number, since it is smaller than the sum of its proper divisors (25915974).

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

25163994 is a wasteful number, since it uses less digits than its factorization.

25163994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62669.

The product of its digits is 58320, while the sum is 39.

The square root of 25163994 is about 5016.3725938172. The cubic root of 25163994 is about 293.0397426938.

The spelling of 25163994 in words is "twenty-five million, one hundred sixty-three thousand, nine hundred ninety-four".