25970913 has 12 divisors (see below), whose sum is σ = 37557780. Its totient is φ = 17293536.

The previous prime is 25970911. The next prime is 25970941. The reversal of 25970913 is 31907952.

It can be written as a sum of positive squares in 2 ways, for example, as 21095649 + 4875264 = 4593^2 + 2208^2 .

It is not a de Polignac number, because 25970913 - 2¹ = 25970911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25970911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13623 + ... + 15411.

It is an arithmetic number, because the mean of its divisors is an integer number (3129815).

Almost surely, 2^25970913 is an apocalyptic number.

It is an amenable number.

25970913 is a deficient number, since it is larger than the sum of its proper divisors (11586867).

25970913 is a wasteful number, since it uses less digits than its factorization.

25970913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408 (or 3405 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 25970913 is about 5096.1665004197. The cubic root of 25970913 is about 296.1390911012.

The spelling of 25970913 in words is "twenty-five million, nine hundred seventy thousand, nine hundred thirteen".