25477013 has 4 divisors (see below), whose sum is σ = 25502988. Its totient is φ = 25451040.

The previous prime is 25477007. The next prime is 25477079. The reversal of 25477013 is 31077452.

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 16703569 + 8773444 = 4087^2 + 2962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25477013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25477213) 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, 11456 + ... + 13497.

It is an arithmetic number, because the mean of its divisors is an integer number (6375747).

Almost surely, 2^25477013 is an apocalyptic number.

It is an amenable number.

25477013 is a deficient number, since it is larger than the sum of its proper divisors (25975).

25477013 is a wasteful number, since it uses less digits than its factorization.

25477013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25974.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 25477013 is about 5047.4759038553. The cubic root of 25477013 is about 294.2497954155.

The spelling of 25477013 in words is "twenty-five million, four hundred seventy-seven thousand, thirteen".