240252025533021 has 6 divisors (see below), whose sum is σ = 347030703547710. Its totient is φ = 160168017022008.

The previous prime is 240252025533017. The next prime is 240252025533031. The reversal of 240252025533021 is 120335520252042.

It is a happy number.

240252025533021 is a `hidden beast` number, since 2 + 4 + 0 + 2 + 52 + 0 + 2 + 553 + 30 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123841175276025 + 116410850256996 = 11128395^2 + 10789386^2 .

It is not a de Polignac number, because 240252025533021 - 2² = 240252025533017 is a prime.

It is a super-2 number, since 2×240252025533021² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240252025533001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13347334751826 + ... + 13347334751843.

It is an arithmetic number, because the mean of its divisors is an integer number (57838450591285).

Almost surely, 2^{240252025533021} is an apocalyptic number.

It is an amenable number.

240252025533021 is a deficient number, since it is larger than the sum of its proper divisors (106778678014689).

240252025533021 is a wasteful number, since it uses less digits than its factorization.

240252025533021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26694669503675 (or 26694669503672 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 240252025533021 its reverse (120335520252042), we get a palindrome (360587545785063).

The spelling of 240252025533021 in words is "two hundred forty trillion, two hundred fifty-two billion, twenty-five million, five hundred thirty-three thousand, twenty-one".