125235002153021 has 4 divisors (see below), whose sum is σ = 125235028701600. Its totient is φ = 125234975604444.

The previous prime is 125235002152951. The next prime is 125235002153047. The reversal of 125235002153021 is 120351200532521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125235002153021 - 2¹⁰ = 125235002151997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125235002156021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4072031 + ... + 16341708.

It is an arithmetic number, because the mean of its divisors is an integer number (31308757175400).

Almost surely, 2^{125235002153021} is an apocalyptic number.

It is an amenable number.

125235002153021 is a deficient number, since it is larger than the sum of its proper divisors (26548579).

125235002153021 is an equidigital number, since it uses as much as digits as its factorization.

125235002153021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548578.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 125235002153021 its reverse (120351200532521), we get a palindrome (245586202685542).

The spelling of 125235002153021 in words is "one hundred twenty-five trillion, two hundred thirty-five billion, two million, one hundred fifty-three thousand, twenty-one".