25473961 has 4 divisors (see below), whose sum is σ = 25486852. Its totient is φ = 25461072.

The previous prime is 25473937. The next prime is 25473967. The reversal of 25473961 is 16937452.

It is the 2061-st star number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24561936 + 912025 = 4956^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 25473961 - 2²³ = 17085353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25473961.

It is not an unprimeable number, because it can be changed into a prime (25473967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790 + ... + 7663.

It is an arithmetic number, because the mean of its divisors is an integer number (6371713).

Almost surely, 2^25473961 is an apocalyptic number.

It is an amenable number.

25473961 is a deficient number, since it is larger than the sum of its proper divisors (12891).

25473961 is a wasteful number, since it uses less digits than its factorization.

25473961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12890.

The product of its digits is 45360, while the sum is 37.

The square root of 25473961 is about 5047.1735654721. The cubic root of 25473961 is about 294.2380451338.

The spelling of 25473961 in words is "twenty-five million, four hundred seventy-three thousand, nine hundred sixty-one".