1213625415 has 8 divisors (see below), whose sum is σ = 1941800688. Its totient is φ = 647266880.

The previous prime is 1213625401. The next prime is 1213625423. The reversal of 1213625415 is 5145263121.

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

It is not a de Polignac number, because 1213625415 - 2⁸ = 1213625159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40454166 + ... + 40454195.

It is an arithmetic number, because the mean of its divisors is an integer number (242725086).

Almost surely, 2^1213625415 is an apocalyptic number.

1213625415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1213625415 is a deficient number, since it is larger than the sum of its proper divisors (728175273).

1213625415 is an equidigital number, since it uses as much as digits as its factorization.

1213625415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80908369.

The product of its digits is 7200, while the sum is 30.

The square root of 1213625415 is about 34837.1269624807. The cubic root of 1213625415 is about 1066.6654319105.

Adding to 1213625415 its reverse (5145263121), we get a palindrome (6358888536).

The spelling of 1213625415 in words is "one billion, two hundred thirteen million, six hundred twenty-five thousand, four hundred fifteen".