121317625 has 48 divisors (see below), whose sum is σ = 179511696. Its totient is φ = 81312000.

The previous prime is 121317613. The next prime is 121317631. The reversal of 121317625 is 526713121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 97140736 + 24176889 = 9856^2 + 4917^2 .

It is not a de Polignac number, because 121317625 - 2⁹ = 121317113 is a prime.

It is a super-2 number, since 2×121317625² = 29435932271281250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121317593 and 121317602.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196317 + ... + 196933.

It is an arithmetic number, because the mean of its divisors is an integer number (3739827).

Almost surely, 2^121317625 is an apocalyptic number.

It is an amenable number.

121317625 is a deficient number, since it is larger than the sum of its proper divisors (58194071).

121317625 is a wasteful number, since it uses less digits than its factorization.

121317625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 646 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 121317625 is about 11014.4280378057. The cubic root of 121317625 is about 495.0411488426.

The spelling of 121317625 in words is "one hundred twenty-one million, three hundred seventeen thousand, six hundred twenty-five".