25434434 has 16 divisors (see below), whose sum is σ = 38658816. Its totient is φ = 12549600.

The previous prime is 25434433. The next prime is 25434463. The reversal of 25434434 is 43443452.

It is a junction number, because it is equal to n+sod(n) for n = 25434397 and 25434406.

It is not an unprimeable number, because it can be changed into a prime (25434433) 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, 90374 + ... + 90654.

It is an arithmetic number, because the mean of its divisors is an integer number (2416176).

Almost surely, 2^25434434 is an apocalyptic number.

25434434 is a deficient number, since it is larger than the sum of its proper divisors (13224382).

25434434 is a wasteful number, since it uses less digits than its factorization.

25434434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its digits is 23040, while the sum is 29.

The square root of 25434434 is about 5043.2562893432. The cubic root of 25434434 is about 294.0857802667.

Adding to 25434434 its reverse (43443452), we get a palindrome (68877886).

The spelling of 25434434 in words is "twenty-five million, four hundred thirty-four thousand, four hundred thirty-four".