25213597 has 2 divisors, whose sum is σ = 25213598. Its totient is φ = 25213596.

The previous prime is 25213579. The next prime is 25213607. The reversal of 25213597 is 79531252.

Together with previous prime (25213579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20169081 + 5044516 = 4491^2 + 2246^2 .

It is a cyclic number.

It is not a de Polignac number, because 25213597 - 2⁷ = 25213469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25213537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606798 + 12606799.

It is an arithmetic number, because the mean of its divisors is an integer number (12606799).

Almost surely, 2^25213597 is an apocalyptic number.

It is an amenable number.

25213597 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213597 is an equidigital number, since it uses as much as digits as its factorization.

25213597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 25213597 is about 5021.3142701886. The cubic root of 25213597 is about 293.2321619360.

The spelling of 25213597 in words is "twenty-five million, two hundred thirteen thousand, five hundred ninety-seven".