2545262664 has 96 divisors (see below), whose sum is σ = 7474259520. Its totient is φ = 720123264.

The previous prime is 2545262659. The next prime is 2545262689. The reversal of 2545262664 is 4662625452.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110622 + ... + 131634.

It is an arithmetic number, because the mean of its divisors is an integer number (77856870).

Almost surely, 2^2545262664 is an apocalyptic number.

2545262664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2545262664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3737129760).

2545262664 is an abundant number, since it is smaller than the sum of its proper divisors (4928996856).

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

2545262664 is a wasteful number, since it uses less digits than its factorization.

2545262664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21139 (or 21128 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The square root of 2545262664 is about 50450.5962700145. The cubic root of 2545262664 is about 1365.3506528459.

The spelling of 2545262664 in words is "two billion, five hundred forty-five million, two hundred sixty-two thousand, six hundred sixty-four".