1625641355 has 16 divisors (see below), whose sum is σ = 2103032064. Its totient is φ = 1199214720.

The previous prime is 1625641331. The next prime is 1625641379. The reversal of 1625641355 is 5531465261.

It is an interprime number because it is at equal distance from previous prime (1625641331) and next prime (1625641379).

It is not a de Polignac number, because 1625641355 - 2²⁰ = 1624592779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51797 + ... + 77033.

It is an arithmetic number, because the mean of its divisors is an integer number (131439504).

Almost surely, 2^1625641355 is an apocalyptic number.

1625641355 is a deficient number, since it is larger than the sum of its proper divisors (477390709).

1625641355 is a wasteful number, since it uses less digits than its factorization.

1625641355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26246.

The product of its digits is 108000, while the sum is 38.

The square root of 1625641355 is about 40319.2429864451. The cubic root of 1625641355 is about 1175.8219943121.

The spelling of 1625641355 in words is "one billion, six hundred twenty-five million, six hundred forty-one thousand, three hundred fifty-five".