121517625 has 64 divisors (see below), whose sum is σ = 214995456. Its totient is φ = 60825600.

The previous prime is 121517611. The next prime is 121517647. The reversal of 121517625 is 526715121.

It is not a de Polignac number, because 121517625 - 2⁴ = 121517609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121517592 and 121517601.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 629529 + ... + 629721.

It is an arithmetic number, because the mean of its divisors is an integer number (3359304).

Almost surely, 2^121517625 is an apocalyptic number.

121517625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121517625 is a deficient number, since it is larger than the sum of its proper divisors (93477831).

121517625 is a wasteful number, since it uses less digits than its factorization.

121517625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 297 counting only the distinct ones).

The product of its digits is 4200, while the sum is 30.

The square root of 121517625 is about 11023.5032997682. The cubic root of 121517625 is about 495.3130353399.

The spelling of 121517625 in words is "one hundred twenty-one million, five hundred seventeen thousand, six hundred twenty-five".