1225500135 has 8 divisors (see below), whose sum is σ = 1960800240. Its totient is φ = 653600064.

The previous prime is 1225500113. The next prime is 1225500173. The reversal of 1225500135 is 5310055221.

It is a happy number.

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

It is not a de Polignac number, because 1225500135 - 2¹⁴ = 1225483751 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, 40849990 + ... + 40850019.

It is an arithmetic number, because the mean of its divisors is an integer number (245100030).

Almost surely, 2^1225500135 is an apocalyptic number.

1225500135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225500135 is a deficient number, since it is larger than the sum of its proper divisors (735300105).

1225500135 is an equidigital number, since it uses as much as digits as its factorization.

1225500135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81700017.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1225500135 is about 35007.1440566065. The cubic root of 1225500135 is about 1070.1330765862.

Adding to 1225500135 its reverse (5310055221), we get a palindrome (6535555356).

The spelling of 1225500135 in words is "one billion, two hundred twenty-five million, five hundred thousand, one hundred thirty-five".