121540325 has 12 divisors (see below), whose sum is σ = 150944580. Its totient is φ = 97080960.

The previous prime is 121540319. The next prime is 121540333. The reversal of 121540325 is 523045121.

It can be written as a sum of positive squares in 6 ways, for example, as 50154724 + 71385601 = 7082^2 + 8449^2 .

It is not a de Polignac number, because 121540325 - 2¹⁶ = 121474789 is a prime.

It is a super-2 number, since 2×121540325² = 29544101202211250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121540325.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14297 + ... + 21153.

It is an arithmetic number, because the mean of its divisors is an integer number (12578715).

Almost surely, 2^121540325 is an apocalyptic number.

It is an amenable number.

121540325 is a deficient number, since it is larger than the sum of its proper divisors (29404255).

121540325 is an equidigital number, since it uses as much as digits as its factorization.

121540325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576 (or 7571 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 121540325 is about 11024.5328699224. The cubic root of 121540325 is about 495.3438756011.

Adding to 121540325 its reverse (523045121), we get a palindrome (644585446).

The spelling of 121540325 in words is "one hundred twenty-one million, five hundred forty thousand, three hundred twenty-five".