2515391225 has 6 divisors (see below), whose sum is σ = 3119085150. Its totient is φ = 2012312960.

The previous prime is 2515391173. The next prime is 2515391231. The reversal of 2515391225 is 5221935152.

It can be written as a sum of positive squares in 3 ways, for example, as 2274064 + 2513117161 = 1508^2 + 50131^2 .

It is not a de Polignac number, because 2515391225 - 2⁶ = 2515391161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50307800 + ... + 50307849.

It is an arithmetic number, because the mean of its divisors is an integer number (519847525).

Almost surely, 2^2515391225 is an apocalyptic number.

2515391225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2515391225 is a deficient number, since it is larger than the sum of its proper divisors (603693925).

2515391225 is a wasteful number, since it uses less digits than its factorization.

2515391225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100615659 (or 100615654 counting only the distinct ones).

The product of its digits is 27000, while the sum is 35.

The square root of 2515391225 is about 50153.6760866041. The cubic root of 2515391225 is about 1359.9883262046.

The spelling of 2515391225 in words is "two billion, five hundred fifteen million, three hundred ninety-one thousand, two hundred twenty-five".