10252120315531 has 4 divisors (see below), whose sum is σ = 10252127978632. Its totient is φ = 10252112652432.

The previous prime is 10252120315501. The next prime is 10252120315583. The reversal of 10252120315531 is 13551302125201.

It is a happy number.

10252120315531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10252120315531 - 2¹⁵ = 10252120282763 is a prime.

It is a super-2 number, since 2×10252120315531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10252120315493 and 10252120315502.

It is not an unprimeable number, because it can be changed into a prime (10252120315501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240881 + ... + 4695106.

It is an arithmetic number, because the mean of its divisors is an integer number (2563031994658).

Almost surely, 2^{10252120315531} is an apocalyptic number.

10252120315531 is a deficient number, since it is larger than the sum of its proper divisors (7663101).

10252120315531 is an equidigital number, since it uses as much as digits as its factorization.

10252120315531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663100.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 10252120315531 in words is "ten trillion, two hundred fifty-two billion, one hundred twenty million, three hundred fifteen thousand, five hundred thirty-one".