25236390 has 16 divisors (see below), whose sum is σ = 60567408. Its totient is φ = 6729696.

The previous prime is 25236377. The next prime is 25236391. The reversal of 25236390 is 9363252.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 841213 = 25236390 / (2 + 5 + 2 + 3 + 6 + 3 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25236391) 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, 420577 + ... + 420636.

It is an arithmetic number, because the mean of its divisors is an integer number (3785463).

Almost surely, 2^25236390 is an apocalyptic number.

25236390 is an abundant number, since it is smaller than the sum of its proper divisors (35331018).

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

25236390 is a wasteful number, since it uses less digits than its factorization.

25236390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841223.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 25236390 is about 5023.5833824074. The cubic root of 25236390 is about 293.3204955929.

The spelling of 25236390 in words is "twenty-five million, two hundred thirty-six thousand, three hundred ninety".