121535251612325 has 12 divisors (see below), whose sum is σ = 150709063996608. Its totient is φ = 97224748388400.

The previous prime is 121535251612289. The next prime is 121535251612349. The reversal of 121535251612325 is 523216152535121.

It is not a de Polignac number, because 121535251612325 - 2¹⁴ = 121535251595941 is a prime.

It is a super-2 number, since 2×121535251612325² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85604381 + ... + 87012530.

It is an arithmetic number, because the mean of its divisors is an integer number (12559088666384).

Almost surely, 2^{121535251612325} is an apocalyptic number.

It is an amenable number.

121535251612325 is a deficient number, since it is larger than the sum of its proper divisors (29173812384283).

121535251612325 is a wasteful number, since it uses less digits than its factorization.

121535251612325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172645084 (or 172645079 counting only the distinct ones).

The product of its digits is 540000, while the sum is 44.

The spelling of 121535251612325 in words is "one hundred twenty-one trillion, five hundred thirty-five billion, two hundred fifty-one million, six hundred twelve thousand, three hundred twenty-five".