1252155245 has 8 divisors (see below), whose sum is σ = 1639185120. Its totient is φ = 910658320.

The previous prime is 1252155239. The next prime is 1252155251. The reversal of 1252155245 is 5425512521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1252155239) and next prime (1252155251).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252155245 - 2⁸ = 1252154989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11383175 + ... + 11383284.

It is an arithmetic number, because the mean of its divisors is an integer number (204898140).

Almost surely, 2^1252155245 is an apocalyptic number.

It is an amenable number.

1252155245 is a deficient number, since it is larger than the sum of its proper divisors (387029875).

1252155245 is a wasteful number, since it uses less digits than its factorization.

1252155245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22766475.

The product of its digits is 20000, while the sum is 32.

The square root of 1252155245 is about 35385.8056994609. The cubic root of 1252155245 is about 1077.8361008125.

Adding to 1252155245 its reverse (5425512521), we get a palindrome (6677667766).

The spelling of 1252155245 in words is "one billion, two hundred fifty-two million, one hundred fifty-five thousand, two hundred forty-five".