125321252445 has 12 divisors (see below), whose sum is σ = 217223504316. Its totient is φ = 66838001280.

The previous prime is 125321252423. The next prime is 125321252447. The reversal of 125321252445 is 544252123521.

125321252445 is a `hidden beast` number, since 125 + 3 + 2 + 1 + 2 + 524 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 81771405849 + 43549846596 = 285957^2 + 208686^2 .

It is not a de Polignac number, because 125321252445 - 2⁷ = 125321252317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125321252447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1392458316 + ... + 1392458405.

It is an arithmetic number, because the mean of its divisors is an integer number (18101958693).

Almost surely, 2^125321252445 is an apocalyptic number.

125321252445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125321252445 is a deficient number, since it is larger than the sum of its proper divisors (91902251871).

125321252445 is a wasteful number, since it uses less digits than its factorization.

125321252445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784916732 (or 2784916729 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 125321252445 its reverse (544252123521), we get a palindrome (669573375966).

The spelling of 125321252445 in words is "one hundred twenty-five billion, three hundred twenty-one million, two hundred fifty-two thousand, four hundred forty-five".