1540262225 has 6 divisors (see below), whose sum is σ = 1909925190. Its totient is φ = 1232209760.

The previous prime is 1540262219. The next prime is 1540262257. The reversal of 1540262225 is 5222620451.

It can be written as a sum of positive squares in 3 ways, for example, as 37847104 + 1502415121 = 6152^2 + 38761^2 .

It is not a de Polignac number, because 1540262225 - 2⁶ = 1540262161 is a prime.

It is a Curzon number.

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, 30805220 + ... + 30805269.

It is an arithmetic number, because the mean of its divisors is an integer number (318320865).

Almost surely, 2^1540262225 is an apocalyptic number.

It is an amenable number.

1540262225 is a deficient number, since it is larger than the sum of its proper divisors (369662965).

1540262225 is an equidigital number, since it uses as much as digits as its factorization.

1540262225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61610499 (or 61610494 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1540262225 is about 39246.1746543533. The cubic root of 1540262225 is about 1154.8658914898.

Adding to 1540262225 its reverse (5222620451), we get a palindrome (6762882676).

The spelling of 1540262225 in words is "one billion, five hundred forty million, two hundred sixty-two thousand, two hundred twenty-five".