25463634 has 32 divisors (see below), whose sum is σ = 59395200. Its totient is φ = 7274736.

The previous prime is 25463597. The next prime is 25463639. The reversal of 25463634 is 43636452.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25463595 and 25463604.

It is not an unprimeable number, because it can be changed into a prime (25463639) 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, 4129 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (1856100).

Almost surely, 2^25463634 is an apocalyptic number.

25463634 is an abundant number, since it is smaller than the sum of its proper divisors (33931566).

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

25463634 is a wasteful number, since it uses less digits than its factorization.

25463634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12399 (or 12385 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

The square root of 25463634 is about 5046.1504139294. The cubic root of 25463634 is about 294.1982789454.

The spelling of 25463634 in words is "twenty-five million, four hundred sixty-three thousand, six hundred thirty-four".