25234638 has 32 divisors (see below), whose sum is σ = 59294592. Its totient is φ = 7058400.

The previous prime is 25234637. The next prime is 25234757. The reversal of 25234638 is 83643252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25234599 and 25234608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25234631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13848 + ... + 15563.

It is an arithmetic number, because the mean of its divisors is an integer number (1852956).

Almost surely, 2^25234638 is an apocalyptic number.

25234638 is an abundant number, since it is smaller than the sum of its proper divisors (34059954).

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

25234638 is a wasteful number, since it uses less digits than its factorization.

25234638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29440.

The product of its digits is 34560, while the sum is 33.

The square root of 25234638 is about 5023.4090018632. The cubic root of 25234638 is about 293.3137076516.

The spelling of 25234638 in words is "twenty-five million, two hundred thirty-four thousand, six hundred thirty-eight".