2551505722 has 4 divisors (see below), whose sum is σ = 3827258586. Its totient is φ = 1275752860.

The previous prime is 2551505711. The next prime is 2551505731. The reversal of 2551505722 is 2275051552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1671256161 + 880249561 = 40881^2 + 29669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637876429 + ... + 637876432.

Almost surely, 2^2551505722 is an apocalyptic number.

2551505722 is a deficient number, since it is larger than the sum of its proper divisors (1275752864).

2551505722 is a wasteful number, since it uses less digits than its factorization.

2551505722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275752863.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 2551505722 is about 50512.4313610026. The cubic root of 2551505722 is about 1366.4660588225.

The spelling of 2551505722 in words is "two billion, five hundred fifty-one million, five hundred five thousand, seven hundred twenty-two".