1625720470 has 32 divisors (see below), whose sum is σ = 3200614560. Its totient is φ = 589635840.

The previous prime is 1625720449. The next prime is 1625720471. The reversal of 1625720470 is 740275261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625720471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23794 + ... + 61786.

It is an arithmetic number, because the mean of its divisors is an integer number (100019205).

Almost surely, 2^1625720470 is an apocalyptic number.

1625720470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625720470 is a deficient number, since it is larger than the sum of its proper divisors (1574894090).

1625720470 is a wasteful number, since it uses less digits than its factorization.

1625720470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38400.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1625720470 is about 40320.2240817186. The cubic root of 1625720470 is about 1175.8410685578.

The spelling of 1625720470 in words is "one billion, six hundred twenty-five million, seven hundred twenty thousand, four hundred seventy".