25212136073 has 2 divisors, whose sum is σ = 25212136074. Its totient is φ = 25212136072.

The previous prime is 25212136063. The next prime is 25212136091. The reversal of 25212136073 is 37063121252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16162799689 + 9049336384 = 127133^2 + 95128^2 .

It is a cyclic number.

It is not a de Polignac number, because 25212136073 - 2⁴ = 25212136057 is a prime.

It is a super-2 number, since 2×25212136073² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25212136043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606068036 + 12606068037.

It is an arithmetic number, because the mean of its divisors is an integer number (12606068037).

Almost surely, 2^25212136073 is an apocalyptic number.

It is an amenable number.

25212136073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25212136073 is an equidigital number, since it uses as much as digits as its factorization.

25212136073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 25212136073 in words is "twenty-five billion, two hundred twelve million, one hundred thirty-six thousand, seventy-three".