1201525850 has 24 divisors (see below), whose sum is σ = 2554101408. Its totient is φ = 411951600.

The previous prime is 1201525849. The next prime is 1201525859. The reversal of 1201525850 is 585251021.

It is not an unprimeable number, because it can be changed into a prime (1201525859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1716116 + ... + 1716815.

It is an arithmetic number, because the mean of its divisors is an integer number (106420892).

Almost surely, 2^1201525850 is an apocalyptic number.

1201525850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201525850 is an abundant number, since it is smaller than the sum of its proper divisors (1352575558).

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

1201525850 is a wasteful number, since it uses less digits than its factorization.

1201525850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432950 (or 3432945 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 1201525850 is about 34663.0329025029. The cubic root of 1201525850 is about 1063.1087832972.

Adding to 1201525850 its reverse (585251021), we get a palindrome (1786776871).

The spelling of 1201525850 in words is "one billion, two hundred one million, five hundred twenty-five thousand, eight hundred fifty".