125223642453 has 64 divisors (see below), whose sum is σ = 211281799680. Its totient is φ = 64196001792.

The previous prime is 125223642449. The next prime is 125223642487. The reversal of 125223642453 is 354246322521.

It is not a de Polignac number, because 125223642453 - 2² = 125223642449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125223642443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9862333 + ... + 9875021.

It is an arithmetic number, because the mean of its divisors is an integer number (3301278120).

Almost surely, 2^125223642453 is an apocalyptic number.

125223642453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

125223642453 is a deficient number, since it is larger than the sum of its proper divisors (86058157227).

125223642453 is a wasteful number, since it uses less digits than its factorization.

125223642453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13726.

The product of its digits is 345600, while the sum is 39.

Adding to 125223642453 its reverse (354246322521), we get a palindrome (479469964974).

The spelling of 125223642453 in words is "one hundred twenty-five billion, two hundred twenty-three million, six hundred forty-two thousand, four hundred fifty-three".