2749429225 has 9 divisors (see below), whose sum is σ = 3409617367. Its totient is φ = 2199333640.

The previous prime is 2749429213. The next prime is 2749429229. The reversal of 2749429225 is 5229249472.

The square root of 2749429225 is 52435.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 989794521 + 1759634704 = 31461^2 + 41948^2 .

It is not a de Polignac number, because 2749429225 - 2⁷ = 2749429097 is a prime.

It is a super-2 number, since 2×2749429225² = 15118722126568201250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2749429229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 256932 + ... + 267418.

Almost surely, 2^2749429225 is an apocalyptic number.

2749429225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2749429225 is the 52435-th square number.

2749429225 is the 26218-th centered octagonal number.

It is an amenable number.

2749429225 is a deficient number, since it is larger than the sum of its proper divisors (660188142).

2749429225 is an frugal number, since it uses more digits than its factorization.

2749429225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20984 (or 10492 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The cubic root of 2749429225 is about 1400.9227292876.

The spelling of 2749429225 in words is "two billion, seven hundred forty-nine million, four hundred twenty-nine thousand, two hundred twenty-five".