99675961225 has 27 divisors (see below), whose sum is σ = 124590670869. Its totient is φ = 79105550400.

The previous prime is 99675961201. The next prime is 99675961247. The reversal of 99675961225 is 52216957699.

The square root of 99675961225 is 315715.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 19629971449 + 80045989776 = 140107^2 + 282924^2 .

It is not a de Polignac number, because 99675961225 - 2¹⁷ = 99675830153 is a prime.

It is a super-2 number, since 2×99675961225² (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 26 ways as a sum of consecutive naturals, for example, 367807840 + ... + 367808110.

Almost surely, 2^99675961225 is an apocalyptic number.

99675961225 is the 315715-th square number.

99675961225 is the 157858-th centered octagonal number.

It is an amenable number.

99675961225 is a deficient number, since it is larger than the sum of its proper divisors (24914709644).

99675961225 is an frugal number, since it uses more digits than its factorization.

99675961225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 509 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 61.

It can be divided in two parts, 99675 and 961225, that added together give a square (1060900 = 1030²).

The spelling of 99675961225 in words is "ninety-nine billion, six hundred seventy-five million, nine hundred sixty-one thousand, two hundred twenty-five".