25112532493 has 2 divisors, whose sum is σ = 25112532494. Its totient is φ = 25112532492.

The previous prime is 25112532479. The next prime is 25112532527. The reversal of 25112532493 is 39423521152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18545537124 + 6566995369 = 136182^2 + 81037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25112532493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25112532433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12556266246 + 12556266247.

It is an arithmetic number, because the mean of its divisors is an integer number (12556266247).

Almost surely, 2^25112532493 is an apocalyptic number.

It is an amenable number.

25112532493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25112532493 is an equidigital number, since it uses as much as digits as its factorization.

25112532493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The spelling of 25112532493 in words is "twenty-five billion, one hundred twelve million, five hundred thirty-two thousand, four hundred ninety-three".