1225499760 has 320 divisors, whose sum is σ = 4384005120. Its totient is φ = 314496000.

The previous prime is 1225499741. The next prime is 1225499773. The reversal of 1225499760 is 679945221.

1225499760 is a `hidden beast` number, since 12 + 2 + 549 + 97 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9354895 + ... + 9355025.

It is an arithmetic number, because the mean of its divisors is an integer number (13700016).

Almost surely, 2^1225499760 is an apocalyptic number.

1225499760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225499760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2192002560).

1225499760 is an abundant number, since it is smaller than the sum of its proper divisors (3158505360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225499760 is a wasteful number, since it uses less digits than its factorization.

1225499760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 1225499760 is about 35007.1387005565. The cubic root of 1225499760 is about 1070.1329674335.

The spelling of 1225499760 in words is "one billion, two hundred twenty-five million, four hundred ninety-nine thousand, seven hundred sixty".