25145634 has 16 divisors (see below), whose sum is σ = 50353920. Its totient is φ = 8371440.

The previous prime is 25145633. The next prime is 25145641. The reversal of 25145634 is 43654152.

It is not an unprimeable number, because it can be changed into a prime (25145633) 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, 3832 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (3147120).

Almost surely, 2^25145634 is an apocalyptic number.

25145634 is an abundant number, since it is smaller than the sum of its proper divisors (25208286).

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

25145634 is a wasteful number, since it uses less digits than its factorization.

25145634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225.

The product of its digits is 14400, while the sum is 30.

The square root of 25145634 is about 5014.5422522898. The cubic root of 25145634 is about 292.9684567300.

Adding to 25145634 its reverse (43654152), we get a palindrome (68799786).

The spelling of 25145634 in words is "twenty-five million, one hundred forty-five thousand, six hundred thirty-four".