25161950 has 36 divisors (see below), whose sum is σ = 51455040. Its totient is φ = 9147600.

The previous prime is 25161949. The next prime is 25161959. The reversal of 25161950 is 5916152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25161959) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3971 + ... + 8129.

Almost surely, 2^25161950 is an apocalyptic number.

25161950 is an abundant number, since it is smaller than the sum of its proper divisors (26293090).

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

25161950 is a wasteful number, since it uses less digits than its factorization.

25161950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193 (or 4177 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 25161950 is about 5016.1688568070. The cubic root of 25161950 is about 293.0318082161.

The spelling of 25161950 in words is "twenty-five million, one hundred sixty-one thousand, nine hundred fifty".