2545521634 has 16 divisors (see below), whose sum is σ = 3941208000. Its totient is φ = 1232131824.

The previous prime is 2545521623. The next prime is 2545521659. The reversal of 2545521634 is 4361255452.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 2545521593 and 2545521602.

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, 71704 + ... + 101155.

It is an arithmetic number, because the mean of its divisors is an integer number (246325500).

Almost surely, 2^2545521634 is an apocalyptic number.

2545521634 is a deficient number, since it is larger than the sum of its proper divisors (1395686366).

2545521634 is a wasteful number, since it uses less digits than its factorization.

2545521634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173097.

The product of its digits is 144000, while the sum is 37.

The square root of 2545521634 is about 50453.1627749936. The cubic root of 2545521634 is about 1365.3969575452.

It can be divided in two parts, 25455 and 21634, that added together give a square (47089 = 217²).

The spelling of 2545521634 in words is "two billion, five hundred forty-five million, five hundred twenty-one thousand, six hundred thirty-four".