125404512423 has 16 divisors (see below), whose sum is σ = 168808872960. Its totient is φ = 82801952576.

The previous prime is 125404512403. The next prime is 125404512437. The reversal of 125404512423 is 324215404521.

It is a cyclic number.

It is not a de Polignac number, because 125404512423 - 2¹⁰ = 125404511399 is a prime.

It is a super-2 number, since 2×125404512423² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125404512403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1370986 + ... + 1459592.

It is an arithmetic number, because the mean of its divisors is an integer number (10550554560).

Almost surely, 2^125404512423 is an apocalyptic number.

125404512423 is a deficient number, since it is larger than the sum of its proper divisors (43404360537).

125404512423 is a wasteful number, since it uses less digits than its factorization.

125404512423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93126.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 125404512423 its reverse (324215404521), we get a palindrome (449619916944).

The spelling of 125404512423 in words is "one hundred twenty-five billion, four hundred four million, five hundred twelve thousand, four hundred twenty-three".