25964501 has 2 divisors, whose sum is σ = 25964502. Its totient is φ = 25964500.

The previous prime is 25964473. The next prime is 25964509. The reversal of 25964501 is 10546952.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25959025 + 5476 = 5095^2 + 74^2 .

It is a cyclic number.

It is not a de Polignac number, because 25964501 - 2¹⁰ = 25963477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25964509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12982250 + 12982251.

It is an arithmetic number, because the mean of its divisors is an integer number (12982251).

Almost surely, 2^25964501 is an apocalyptic number.

It is an amenable number.

25964501 is a deficient number, since it is larger than the sum of its proper divisors (1).

25964501 is an equidigital number, since it uses as much as digits as its factorization.

25964501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 25964501 is about 5095.5373612603. The cubic root of 25964501 is about 296.1147176782.

The spelling of 25964501 in words is "twenty-five million, nine hundred sixty-four thousand, five hundred one".