1625145222 has 16 divisors (see below), whose sum is σ = 3253649472. Its totient is φ = 541155240.

The previous prime is 1625145187. The next prime is 1625145257. The reversal of 1625145222 is 2225415261.

It is an interprime number because it is at equal distance from previous prime (1625145187) and next prime (1625145257).

It is a self number, because there is not a number n which added to its sum of digits gives 1625145222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133648 + ... + 145299.

It is an arithmetic number, because the mean of its divisors is an integer number (203353092).

Almost surely, 2^1625145222 is an apocalyptic number.

1625145222 is an abundant number, since it is smaller than the sum of its proper divisors (1628504250).

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

1625145222 is a wasteful number, since it uses less digits than its factorization.

1625145222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279923.

The product of its digits is 9600, while the sum is 30.

The square root of 1625145222 is about 40313.0899584738. The cubic root of 1625145222 is about 1175.7023649224.

The spelling of 1625145222 in words is "one billion, six hundred twenty-five million, one hundred forty-five thousand, two hundred twenty-two".