125540451 has 6 divisors (see below), whose sum is σ = 181336220. Its totient is φ = 83693628.

The previous prime is 125540419. The next prime is 125540473. The reversal of 125540451 is 154045521.

125540451 is a `hidden beast` number, since 1 + 255 + 404 + 5 + 1 = 666.

It is not a de Polignac number, because 125540451 - 2⁵ = 125540419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125540351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6974461 + ... + 6974478.

Almost surely, 2^125540451 is an apocalyptic number.

125540451 is a deficient number, since it is larger than the sum of its proper divisors (55795769).

125540451 is a wasteful number, since it uses less digits than its factorization.

125540451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13948945 (or 13948942 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 125540451 is about 11204.4835222334. The cubic root of 125540451 is about 500.7195652882.

Adding to 125540451 its reverse (154045521), we get a palindrome (279585972).

The spelling of 125540451 in words is "one hundred twenty-five million, five hundred forty thousand, four hundred fifty-one".