121625637 has 16 divisors (see below), whose sum is σ = 185788032. Its totient is φ = 69330240.

The previous prime is 121625611. The next prime is 121625641. The reversal of 121625637 is 736526121.

It is not a de Polignac number, because 121625637 - 2⁶ = 121625573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121625598 and 121625607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121625657) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1963 + ... + 15719.

It is an arithmetic number, because the mean of its divisors is an integer number (11611752).

Almost surely, 2^121625637 is an apocalyptic number.

It is an amenable number.

121625637 is a deficient number, since it is larger than the sum of its proper divisors (64162395).

121625637 is a wasteful number, since it uses less digits than its factorization.

121625637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14188.

The product of its digits is 15120, while the sum is 33.

The square root of 121625637 is about 11028.4013800732. The cubic root of 121625637 is about 495.4597463161.

The spelling of 121625637 in words is "one hundred twenty-one million, six hundred twenty-five thousand, six hundred thirty-seven".