125404020453 has 4 divisors (see below), whose sum is σ = 167205360608. Its totient is φ = 83602680300.

The previous prime is 125404020433. The next prime is 125404020461. The reversal of 125404020453 is 354020404521.

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 not a de Polignac number, because 125404020453 - 2⁹ = 125404019941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125404020453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125404020433) 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, 20900670073 + ... + 20900670078.

It is an arithmetic number, because the mean of its divisors is an integer number (41801340152).

Almost surely, 2^125404020453 is an apocalyptic number.

It is an amenable number.

125404020453 is a deficient number, since it is larger than the sum of its proper divisors (41801340155).

125404020453 is an equidigital number, since it uses as much as digits as its factorization.

125404020453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41801340154.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 125404020453 its reverse (354020404521), we get a palindrome (479424424974).

The spelling of 125404020453 in words is "one hundred twenty-five billion, four hundred four million, twenty thousand, four hundred fifty-three".