1225025000 has 96 divisors (see below), whose sum is σ = 3023244000. Its totient is φ = 464040000.

The previous prime is 1225024951. The next prime is 1225025023. The reversal of 1225025000 is 5205221.

It is a self number, because there is not a number n which added to its sum of digits gives 1225025000.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 473711 + ... + 476289.

It is an arithmetic number, because the mean of its divisors is an integer number (31492125).

Almost surely, 2^1225025000 is an apocalyptic number.

1225025000 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 1225025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1511622000).

1225025000 is an abundant number, since it is smaller than the sum of its proper divisors (1798219000).

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

1225025000 is an equidigital number, since it uses as much as digits as its factorization.

1225025000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629 (or 2605 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1225025000 is about 35000.3571410350. The cubic root of 1225025000 is about 1069.9947593420.

It can be divided in two parts, 12250 and 25000, that multiplied together give a square (306250000 = 17500²).

The spelling of 1225025000 in words is "one billion, two hundred twenty-five million, twenty-five thousand".