1420394625 has 192 divisors, whose sum is σ = 3035672640. Its totient is φ = 632217600.

The previous prime is 1420394603. The next prime is 1420394663. The reversal of 1420394625 is 5264930241.

It is a happy number.

1420394625 is a `hidden beast` number, since 1 + 4 + 20 + 3 + 9 + 4 + 625 = 666.

It can be written as a sum of positive squares in 32 ways, for example, as 1133803584 + 286591041 = 33672^2 + 16929^2 .

It is not a de Polignac number, because 1420394625 - 2⁵ = 1420394593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1420394625.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7210027 + ... + 7210223.

It is an arithmetic number, because the mean of its divisors is an integer number (15810795).

Almost surely, 2^1420394625 is an apocalyptic number.

1420394625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420394625 is an abundant number, since it is smaller than the sum of its proper divisors (1615278015).

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

1420394625 is a wasteful number, since it uses less digits than its factorization.

1420394625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1420394625 is about 37688.1231291769. The cubic root of 1420394625 is about 1124.0949758378.

The spelling of 1420394625 in words is "one billion, four hundred twenty million, three hundred ninety-four thousand, six hundred twenty-five".