125402401 has 4 divisors (see below), whose sum is σ = 127168704. Its totient is φ = 123636100.

The previous prime is 125402377. The next prime is 125402419. The reversal of 125402401 is 104204521.

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 not a de Polignac number, because 125402401 - 2⁷ = 125402273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125402441) 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, 883045 + ... + 883186.

It is an arithmetic number, because the mean of its divisors is an integer number (31792176).

Almost surely, 2^125402401 is an apocalyptic number.

It is an amenable number.

125402401 is a deficient number, since it is larger than the sum of its proper divisors (1766303).

125402401 is an equidigital number, since it uses as much as digits as its factorization.

125402401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766302.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 125402401 is about 11198.3213474163. The cubic root of 125402401 is about 500.5359599552.

Adding to 125402401 its reverse (104204521), we get a palindrome (229606922).

It can be divided in two parts, 12540 and 2401, that added together give a palindrome (14941).

The spelling of 125402401 in words is "one hundred twenty-five million, four hundred two thousand, four hundred one".