83211761425 has 24 divisors (see below), whose sum is σ = 114122957816. Its totient is φ = 59787901440.

The previous prime is 83211761419. The next prime is 83211761443. The reversal of 83211761425 is 52416711238.

It can be written as a sum of positive squares in 12 ways, for example, as 11368464129 + 71843297296 = 106623^2 + 268036^2 .

It is not a de Polignac number, because 83211761425 - 2³ = 83211761417 is a prime.

It is a super-2 number, since 2×83211761425² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3447924 + ... + 3471973.

Almost surely, 2^83211761425 is an apocalyptic number.

It is an amenable number.

83211761425 is a deficient number, since it is larger than the sum of its proper divisors (30911196391).

83211761425 is a wasteful number, since it uses less digits than its factorization.

83211761425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6919957 (or 6919952 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The spelling of 83211761425 in words is "eighty-three billion, two hundred eleven million, seven hundred sixty-one thousand, four hundred twenty-five".