121514125425 has 48 divisors (see below), whose sum is σ = 250476920832. Its totient is φ = 50499374400.

The previous prime is 121514125367. The next prime is 121514125433. The reversal of 121514125425 is 524521415121.

It is not a de Polignac number, because 121514125425 - 2¹⁵ = 121514092657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

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, 10514929 + ... + 10526478.

It is an arithmetic number, because the mean of its divisors is an integer number (5218269184).

Almost surely, 2^121514125425 is an apocalyptic number.

121514125425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121514125425 is an abundant number, since it is smaller than the sum of its proper divisors (128962795407).

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

121514125425 is a wasteful number, since it uses less digits than its factorization.

121514125425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21041438 (or 21041433 counting only the distinct ones).

The product of its digits is 16000, while the sum is 33.

The spelling of 121514125425 in words is "one hundred twenty-one billion, five hundred fourteen million, one hundred twenty-five thousand, four hundred twenty-five".