125544401 has 4 divisors (see below), whose sum is σ = 127312704. Its totient is φ = 123776100.

The previous prime is 125544359. The next prime is 125544407. The reversal of 125544401 is 104445521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125544401 is a prime.

It is a super-2 number, since 2×125544401² = 31522793244897602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125544407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884045 + ... + 884186.

It is an arithmetic number, because the mean of its divisors is an integer number (31828176).

Almost surely, 2^125544401 is an apocalyptic number.

It is an amenable number.

125544401 is a deficient number, since it is larger than the sum of its proper divisors (1768303).

125544401 is an equidigital number, since it uses as much as digits as its factorization.

125544401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768302.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 125544401 is about 11204.6597895697. The cubic root of 125544401 is about 500.7248167736.

Adding to 125544401 its reverse (104445521), we get a palindrome (229989922).

The spelling of 125544401 in words is "one hundred twenty-five million, five hundred forty-four thousand, four hundred one".