121773525 has 12 divisors (see below), whose sum is σ = 201332352. Its totient is φ = 64945840.

The previous prime is 121773517. The next prime is 121773529. The reversal of 121773525 is 525377121.

It is a happy number.

It is not a de Polignac number, because 121773525 - 2³ = 121773517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121773529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811749 + ... + 811898.

It is an arithmetic number, because the mean of its divisors is an integer number (16777696).

Almost surely, 2^121773525 is an apocalyptic number.

121773525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121773525 is a deficient number, since it is larger than the sum of its proper divisors (79558827).

121773525 is a wasteful number, since it uses less digits than its factorization.

121773525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623660 (or 1623655 counting only the distinct ones).

The product of its digits is 14700, while the sum is 33.

The square root of 121773525 is about 11035.1042133729. The cubic root of 121773525 is about 495.6604794147.

The spelling of 121773525 in words is "one hundred twenty-one million, seven hundred seventy-three thousand, five hundred twenty-five".