1215412425 has 96 divisors (see below), whose sum is σ = 2376931200. Its totient is φ = 607150080.

The previous prime is 1215412423. The next prime is 1215412427. The reversal of 1215412425 is 5242145121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1215412423) and next prime (1215412427).

It is not a de Polignac number, because 1215412425 - 2¹ = 1215412423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1215412421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1243537 + ... + 1244513.

It is an arithmetic number, because the mean of its divisors is an integer number (24759700).

Almost surely, 2^1215412425 is an apocalyptic number.

1215412425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1215412425 is a deficient number, since it is larger than the sum of its proper divisors (1161518775).

1215412425 is a wasteful number, since it uses less digits than its factorization.

1215412425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112 (or 1101 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1215412425 is about 34862.7655959765. The cubic root of 1215412425 is about 1067.1887144556.

Adding to 1215412425 its reverse (5242145121), we get a palindrome (6457557546).

The spelling of 1215412425 in words is "one billion, two hundred fifteen million, four hundred twelve thousand, four hundred twenty-five".