252597986890 has 16 divisors (see below), whose sum is σ = 470354872680. Its totient is φ = 97555084480.

The previous prime is 252597986833. The next prime is 252597986899. The reversal of 252597986890 is 98689795252.

It can be written as a sum of positive squares in 4 ways, for example, as 136730592441 + 115867394449 = 369771^2 + 340393^2 .

It is a super-2 number, since 2×252597986890² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (252597986899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435513481 + ... + 435514060.

Almost surely, 2^252597986890 is an apocalyptic number.

252597986890 is a deficient number, since it is larger than the sum of its proper divisors (217756885790).

252597986890 is a wasteful number, since it uses less digits than its factorization.

252597986890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871027577.

The product of its (nonzero) digits is 195955200, while the sum is 70.

The spelling of 252597986890 in words is "two hundred fifty-two billion, five hundred ninety-seven million, nine hundred eighty-six thousand, eight hundred ninety".