125402220 has 36 divisors (see below), whose sum is σ = 380387280. Its totient is φ = 33440544.

The previous prime is 125402219. The next prime is 125402267. The reversal of 125402220 is 22204521.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 125402193 and 125402202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348160 + ... + 348519.

Almost surely, 2^125402220 is an apocalyptic number.

125402220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125402220 is an abundant number, since it is smaller than the sum of its proper divisors (254985060).

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

125402220 is a wasteful number, since it uses less digits than its factorization.

125402220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696694 (or 696689 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 125402220 is about 11198.3132658450. The cubic root of 125402220 is about 500.5357191383.

Adding to 125402220 its reverse (22204521), we get a palindrome (147606741).

The spelling of 125402220 in words is "one hundred twenty-five million, four hundred two thousand, two hundred twenty".