25513461 has 20 divisors (see below), whose sum is σ = 39147372. Its totient is φ = 16547328.

The previous prime is 25513457. The next prime is 25513483. The reversal of 25513461 is 16431552.

It can be written as a sum of positive squares in 2 ways, for example, as 24059025 + 1454436 = 4905^2 + 1206^2 .

It is not a de Polignac number, because 25513461 - 2² = 25513457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25513441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1260 + ... + 7253.

Almost surely, 2^25513461 is an apocalyptic number.

It is an amenable number.

25513461 is a deficient number, since it is larger than the sum of its proper divisors (13633911).

25513461 is an equidigital number, since it uses as much as digits as its factorization.

25513461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8562 (or 8553 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 25513461 is about 5051.0851309397. The cubic root of 25513461 is about 294.3900487256.

The spelling of 25513461 in words is "twenty-five million, five hundred thirteen thousand, four hundred sixty-one".