1725642522 has 64 divisors (see below), whose sum is σ = 3939062400. Its totient is φ = 559647360.

The previous prime is 1725642521. The next prime is 1725642539. The reversal of 1725642522 is 2252465271.

1725642522 is a `hidden beast` number, since 1 + 7 + 2 + 5 + 642 + 5 + 2 + 2 = 666.

It is a super-2 number, since 2×1725642522² = 5955684227469040968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1725642521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1033104 + ... + 1034772.

It is an arithmetic number, because the mean of its divisors is an integer number (61547850).

Almost surely, 2^1725642522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1725642522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969531200).

1725642522 is an abundant number, since it is smaller than the sum of its proper divisors (2213419878).

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

1725642522 is a wasteful number, since it uses less digits than its factorization.

1725642522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 2182 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 1725642522 is about 41540.8536503524. The cubic root of 1725642522 is about 1199.4540391433.

The spelling of 1725642522 in words is "one billion, seven hundred twenty-five million, six hundred forty-two thousand, five hundred twenty-two".