2278535163625 has 48 divisors (see below), whose sum is σ = 3308947059600. Its totient is φ = 1561917772800.

The previous prime is 2278535163557. The next prime is 2278535163629. The reversal of 2278535163625 is 5263615358722.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 385899379264 + 1892635784361 = 621208^2 + 1375731^2 .

It is not a de Polignac number, because 2278535163625 - 2¹³ = 2278535155433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2278535163629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19351431 + ... + 19468819.

It is an arithmetic number, because the mean of its divisors is an integer number (68936397075).

Almost surely, 2^{2278535163625} is an apocalyptic number.

2278535163625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2278535163625 is a deficient number, since it is larger than the sum of its proper divisors (1030411895975).

2278535163625 is a wasteful number, since it uses less digits than its factorization.

2278535163625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120587 (or 120570 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 55.

The spelling of 2278535163625 in words is "two trillion, two hundred seventy-eight billion, five hundred thirty-five million, one hundred sixty-three thousand, six hundred twenty-five".