25342912072537 has 2 divisors, whose sum is σ = 25342912072538. Its totient is φ = 25342912072536.

The previous prime is 25342912072529. The next prime is 25342912072697. The reversal of 25342912072537 is 73527021924352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25282956142656 + 59955929881 = 5028216^2 + 244859^2 .

It is a cyclic number.

It is not a de Polignac number, because 25342912072537 - 2³ = 25342912072529 is a prime.

It is not a weakly prime, because it can be changed into another prime (25342912073537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671456036268 + 12671456036269.

It is an arithmetic number, because the mean of its divisors is an integer number (12671456036269).

Almost surely, 2^{25342912072537} is an apocalyptic number.

It is an amenable number.

25342912072537 is a deficient number, since it is larger than the sum of its proper divisors (1).

25342912072537 is an equidigital number, since it uses as much as digits as its factorization.

25342912072537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6350400, while the sum is 52.

Adding to 25342912072537 its reverse (73527021924352), we get a palindrome (98869933996889).

The spelling of 25342912072537 in words is "twenty-five trillion, three hundred forty-two billion, nine hundred twelve million, seventy-two thousand, five hundred thirty-seven".