1625440141 has 6 divisors (see below), whose sum is σ = 1760092170. Its totient is φ = 1500406128.

The previous prime is 1625440129. The next prime is 1625440183. The reversal of 1625440141 is 1410445261.

It can be written as a sum of positive squares in 3 ways, for example, as 92717641 + 1532722500 = 9629^2 + 39150^2 .

It is not a de Polignac number, because 1625440141 - 2¹¹ = 1625438093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625440441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4808826 + ... + 4809163.

It is an arithmetic number, because the mean of its divisors is an integer number (293348695).

Almost surely, 2^1625440141 is an apocalyptic number.

It is an amenable number.

1625440141 is a deficient number, since it is larger than the sum of its proper divisors (134652029).

1625440141 is an equidigital number, since it uses as much as digits as its factorization.

1625440141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618015 (or 9618002 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1625440141 is about 40316.7476490850. The cubic root of 1625440141 is about 1175.7734797965.

The spelling of 1625440141 in words is "one billion, six hundred twenty-five million, four hundred forty thousand, one hundred forty-one".