25561046 has 20 divisors (see below), whose sum is σ = 44737572. Its totient is φ = 10952676.

The previous prime is 25561033. The next prime is 25561051. The reversal of 25561046 is 64016552.

It is a super-2 number, since 2×25561046² = 1306734145228232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2141 + ... + 7463.

Almost surely, 2^25561046 is an apocalyptic number.

25561046 is a deficient number, since it is larger than the sum of its proper divisors (19176526).

25561046 is an frugal number, since it uses more digits than its factorization.

25561046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353 (or 5332 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 25561046 is about 5055.7933106487. The cubic root of 25561046 is about 294.5729567520.

Adding to 25561046 its reverse (64016552), we get a palindrome (89577598).

The spelling of 25561046 in words is "twenty-five million, five hundred sixty-one thousand, forty-six".