25512461 has 16 divisors (see below), whose sum is σ = 29542464. Its totient is φ = 21821184.

The previous prime is 25512437. The next prime is 25512467. The reversal of 25512461 is 16421552.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25512461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25512461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25512467) 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, 13946 + ... + 15668.

It is an arithmetic number, because the mean of its divisors is an integer number (1846404).

Almost surely, 2^25512461 is an apocalyptic number.

It is an amenable number.

25512461 is a deficient number, since it is larger than the sum of its proper divisors (4030003).

25512461 is a wasteful number, since it uses less digits than its factorization.

25512461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820.

The product of its digits is 2400, while the sum is 26.

The square root of 25512461 is about 5050.9861413391. The cubic root of 25512461 is about 294.3862024698.

Subtracting from 25512461 its reverse (16421552), we obtain a palindrome (9090909).

The spelling of 25512461 in words is "twenty-five million, five hundred twelve thousand, four hundred sixty-one".