125503401 has 16 divisors (see below), whose sum is σ = 177933888. Its totient is φ = 78412800.

The previous prime is 125503393. The next prime is 125503421. The reversal of 125503401 is 104305521.

It is not a de Polignac number, because 125503401 - 2³ = 125503393 is a prime.

It is a super-2 number, since 2×125503401² = 31502207325133602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125503421) 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, 7186 + ... + 17396.

It is an arithmetic number, because the mean of its divisors is an integer number (11120868).

Almost surely, 2^125503401 is an apocalyptic number.

It is an amenable number.

125503401 is a deficient number, since it is larger than the sum of its proper divisors (52430487).

125503401 is a wasteful number, since it uses less digits than its factorization.

125503401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10472.

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

The square root of 125503401 is about 11202.8300442344. The cubic root of 125503401 is about 500.6703023214.

Adding to 125503401 its reverse (104305521), we get a palindrome (229808922).

It can be divided in two parts, 12550 and 3401, that added together give a palindrome (15951).

The spelling of 125503401 in words is "one hundred twenty-five million, five hundred three thousand, four hundred one".