125500431 has 16 divisors (see below), whose sum is σ = 197408768. Its totient is φ = 69400800.

The previous prime is 125500327. The next prime is 125500451. The reversal of 125500431 is 134005521.

It is not a de Polignac number, because 125500431 - 2¹¹ = 125498383 is a prime.

It is a super-2 number, since 2×125500431² = 31500716362371522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125500398 and 125500407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125500451) 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, 95740 + ... + 97041.

It is an arithmetic number, because the mean of its divisors is an integer number (12338048).

Almost surely, 2^125500431 is an apocalyptic number.

125500431 is a deficient number, since it is larger than the sum of its proper divisors (71908337).

125500431 is a wasteful number, since it uses less digits than its factorization.

125500431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192822.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 125500431 is about 11202.6974876589. The cubic root of 125500431 is about 500.6663528865. Note that the first 3 decimals are identical.

Adding to 125500431 its reverse (134005521), we get a palindrome (259505952).

The spelling of 125500431 in words is "one hundred twenty-five million, five hundred thousand, four hundred thirty-one".