25436916 has 30 divisors (see below), whose sum is σ = 66497970. Its totient is φ = 8478864.

The previous prime is 25436911. The next prime is 25436959. The reversal of 25436916 is 61963452.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25040016 + 396900 = 5004^2 + 630^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25436911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38931 + ... + 39578.

It is an arithmetic number, because the mean of its divisors is an integer number (2216599).

Almost surely, 2^25436916 is an apocalyptic number.

It is an amenable number.

25436916 is an abundant number, since it is smaller than the sum of its proper divisors (41061054).

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

25436916 is a wasteful number, since it uses less digits than its factorization.

25436916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78525 (or 78514 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 25436916 is about 5043.5023545152. The cubic root of 25436916 is about 294.0953460016.

The spelling of 25436916 in words is "twenty-five million, four hundred thirty-six thousand, nine hundred sixteen".