25770213 has 24 divisors (see below), whose sum is σ = 44782400. Its totient is φ = 13950144.

The previous prime is 25770191. The next prime is 25770221. The reversal of 25770213 is 31207752.

It is not a de Polignac number, because 25770213 - 2⁶ = 25770149 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 (25770233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9568 + ... + 11961.

Almost surely, 2^25770213 is an apocalyptic number.

It is an amenable number.

25770213 is a deficient number, since it is larger than the sum of its proper divisors (19012187).

25770213 is a wasteful number, since it uses less digits than its factorization.

25770213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561 (or 21558 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 25770213 is about 5076.4370379234. The cubic root of 25770213 is about 295.3742754951.

Adding to 25770213 its reverse (31207752), we get a palindrome (56977965).

The spelling of 25770213 in words is "twenty-five million, seven hundred seventy thousand, two hundred thirteen".