121626401725 has 6 divisors (see below), whose sum is σ = 150816738170. Its totient is φ = 97301121360.

The previous prime is 121626401713. The next prime is 121626401803. The reversal of 121626401725 is 527104626121.

It can be written as a sum of positive squares in 3 ways, for example, as 25634251449 + 95992150276 = 160107^2 + 309826^2 .

It is not a de Polignac number, because 121626401725 - 2¹³ = 121626393533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2432528010 + ... + 2432528059.

Almost surely, 2^121626401725 is an apocalyptic number.

It is an amenable number.

121626401725 is a deficient number, since it is larger than the sum of its proper divisors (29190336445).

121626401725 is an equidigital number, since it uses as much as digits as its factorization.

121626401725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865056079 (or 4865056074 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 121626401725 in words is "one hundred twenty-one billion, six hundred twenty-six million, four hundred one thousand, seven hundred twenty-five".