121507340625 has 360 divisors, whose sum is σ = 264655435968. Its totient is φ = 55080000000.

The previous prime is 121507340621. The next prime is 121507340651. The reversal of 121507340625 is 526043705121.

121507340625 is a `hidden beast` number, since 1 + 21 + 5 + 0 + 7 + 3 + 4 + 0 + 625 = 666.

It is not a de Polignac number, because 121507340625 - 2² = 121507340621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121507340625.

It is not an unprimeable number, because it can be changed into a prime (121507340621) 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 359 ways as a sum of consecutive naturals, for example, 804684300 + ... + 804684450.

Almost surely, 2^121507340625 is an apocalyptic number.

121507340625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121507340625 is an abundant number, since it is smaller than the sum of its proper divisors (143148095343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121507340625 is an equidigital number, since it uses as much as digits as its factorization.

121507340625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 121507340625 in words is "one hundred twenty-one billion, five hundred seven million, three hundred forty thousand, six hundred twenty-five".