961261788925 has 6 divisors (see below), whose sum is σ = 1191964618298. Its totient is φ = 769009431120.

The previous prime is 961261788919. The next prime is 961261788943. The reversal of 961261788925 is 529887162169.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 787307481 + 960474481444 = 28059^2 + 980038^2 .

It is not a de Polignac number, because 961261788925 - 2³ = 961261788917 is a prime.

It is a super-3 number, since 3×961261788925³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19225235754 + ... + 19225235803.

Almost surely, 2^961261788925 is an apocalyptic number.

It is an amenable number.

961261788925 is a deficient number, since it is larger than the sum of its proper divisors (230702829373).

961261788925 is a wasteful number, since it uses less digits than its factorization.

961261788925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38450471567 (or 38450471562 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 64.

The spelling of 961261788925 in words is "nine hundred sixty-one billion, two hundred sixty-one million, seven hundred eighty-eight thousand, nine hundred twenty-five".