1969961140225 has 48 divisors (see below), whose sum is σ = 2769421842880. Its totient is φ = 1378020729600.

The previous prime is 1969961140171. The next prime is 1969961140237. The reversal of 1969961140225 is 5220411699691.

It is a happy number.

It is not a de Polignac number, because 1969961140225 - 2¹⁹ = 1969960615937 is a prime.

It is a super-2 number, since 2×1969961140225² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104848282 + ... + 104867068.

Almost surely, 2^{1969961140225} is an apocalyptic number.

It is an amenable number.

1969961140225 is a deficient number, since it is larger than the sum of its proper divisors (799460702655).

1969961140225 is a wasteful number, since it uses less digits than its factorization.

1969961140225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35810 (or 35805 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 1969961140225 in words is "one trillion, nine hundred sixty-nine billion, nine hundred sixty-one million, one hundred forty thousand, two hundred twenty-five".