1225233501 has 16 divisors (see below), whose sum is σ = 1642274304. Its totient is φ = 812518704.

The previous prime is 1225233497. The next prime is 1225233509. The reversal of 1225233501 is 1053325221.

It is a happy number.

It is not a de Polignac number, because 1225233501 - 2² = 1225233497 is a prime.

It is a super-4 number, since 4×1225233501⁴ (a number of 37 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225233509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 752250 + ... + 753876.

It is an arithmetic number, because the mean of its divisors is an integer number (102642144).

Almost surely, 2^1225233501 is an apocalyptic number.

It is an amenable number.

1225233501 is a deficient number, since it is larger than the sum of its proper divisors (417040803).

1225233501 is a wasteful number, since it uses less digits than its factorization.

1225233501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1225233501 is about 35003.3355696282. The cubic root of 1225233501 is about 1070.0554607757.

Adding to 1225233501 its reverse (1053325221), we get a palindrome (2278558722).

It can be divided in two parts, 12252 and 33501, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 1225233501 in words is "one billion, two hundred twenty-five million, two hundred thirty-three thousand, five hundred one".