125501406 has 16 divisors (see below), whose sum is σ = 252920448. Its totient is φ = 41514200.

The previous prime is 125501393. The next prime is 125501407. The reversal of 125501406 is 604105521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125501407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79050 + ... + 80621.

It is an arithmetic number, because the mean of its divisors is an integer number (15807528).

Almost surely, 2^125501406 is an apocalyptic number.

125501406 is an abundant number, since it is smaller than the sum of its proper divisors (127419042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125501406 is a wasteful number, since it uses less digits than its factorization.

125501406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159807.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 125501406 is about 11202.7410038794. The cubic root of 125501406 is about 500.6676494250.

Adding to 125501406 its reverse (604105521), we get a palindrome (729606927).

The spelling of 125501406 in words is "one hundred twenty-five million, five hundred one thousand, four hundred six".