25164337501 has 2 divisors, whose sum is σ = 25164337502. Its totient is φ = 25164337500.

The previous prime is 25164337481. The next prime is 25164337511. The reversal of 25164337501 is 10573346152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22047795225 + 3116542276 = 148485^2 + 55826^2 .

It is a cyclic number.

It is not a de Polignac number, because 25164337501 - 2²¹ = 25162240349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25164337511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12582168750 + 12582168751.

It is an arithmetic number, because the mean of its divisors is an integer number (12582168751).

Almost surely, 2^25164337501 is an apocalyptic number.

It is an amenable number.

25164337501 is a deficient number, since it is larger than the sum of its proper divisors (1).

25164337501 is an equidigital number, since it uses as much as digits as its factorization.

25164337501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 25164337501 in words is "twenty-five billion, one hundred sixty-four million, three hundred thirty-seven thousand, five hundred one".