25265213 has 4 divisors (see below), whose sum is σ = 26751420. Its totient is φ = 23779008.

The previous prime is 25265203. The next prime is 25265237. The reversal of 25265213 is 31256252.

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 16662724 + 8602489 = 4082^2 + 2933^2 .

It is a cyclic number.

It is not a de Polignac number, because 25265213 - 2⁴ = 25265197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265203) 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, 743078 + ... + 743111.

It is an arithmetic number, because the mean of its divisors is an integer number (6687855).

Almost surely, 2^25265213 is an apocalyptic number.

It is an amenable number.

25265213 is a deficient number, since it is larger than the sum of its proper divisors (1486207).

25265213 is a wasteful number, since it uses less digits than its factorization.

25265213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486206.

The product of its digits is 3600, while the sum is 26.

The square root of 25265213 is about 5026.4513326998. The cubic root of 25265213 is about 293.4321222300.

The spelling of 25265213 in words is "twenty-five million, two hundred sixty-five thousand, two hundred thirteen".