1620466025 has 12 divisors (see below), whose sum is σ = 2025203712. Its totient is φ = 1286162640.

The previous prime is 1620466019. The next prime is 1620466079. The reversal of 1620466025 is 5206640261.

It is not a de Polignac number, because 1620466025 - 2⁴ = 1620466009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1620465982 and 1620466000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252017 + ... + 258366.

It is an arithmetic number, because the mean of its divisors is an integer number (168766976).

Almost surely, 2^1620466025 is an apocalyptic number.

It is an amenable number.

1620466025 is a deficient number, since it is larger than the sum of its proper divisors (404737687).

1620466025 is a wasteful number, since it uses less digits than its factorization.

1620466025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510520 (or 510515 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1620466025 is about 40255.0124208154. The cubic root of 1620466025 is about 1174.5729004541.

The spelling of 1620466025 in words is "one billion, six hundred twenty million, four hundred sixty-six thousand, twenty-five".