2505967645 has 8 divisors (see below), whose sum is σ = 3137907456. Its totient is φ = 1917609936.

The previous prime is 2505967613. The next prime is 2505967663. The reversal of 2505967645 is 5467695052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2505967645 - 2⁵ = 2505967613 is a prime.

It is a Duffinian number.

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, 10895397 + ... + 10895626.

It is an arithmetic number, because the mean of its divisors is an integer number (392238432).

Almost surely, 2^2505967645 is an apocalyptic number.

It is an amenable number.

2505967645 is a deficient number, since it is larger than the sum of its proper divisors (631939811).

2505967645 is a wasteful number, since it uses less digits than its factorization.

2505967645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21791051.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The square root of 2505967645 is about 50059.6408796547. The cubic root of 2505967645 is about 1358.2878622121.

The spelling of 2505967645 in words is "two billion, five hundred five million, nine hundred sixty-seven thousand, six hundred forty-five".