203213243220025 has 12 divisors (see below), whose sum is σ = 251996411796732. Its totient is φ = 162562858960640.

The previous prime is 203213243219993. The next prime is 203213243220067. The reversal of 203213243220025 is 520022342312302.

It can be written as a sum of positive squares in 6 ways, for example, as 14947100357904 + 188266142862121 = 3866148^2 + 13721011^2 .

It is not a de Polignac number, because 203213243220025 - 2⁵ = 203213243219993 is a prime.

It is a super-2 number, since 2×203213243220025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192854452 + ... + 193905301.

It is an arithmetic number, because the mean of its divisors is an integer number (20999700983061).

Almost surely, 2^{203213243220025} is an apocalyptic number.

203213243220025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

203213243220025 is a deficient number, since it is larger than the sum of its proper divisors (48783168576707).

203213243220025 is a wasteful number, since it uses less digits than its factorization.

203213243220025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386780780 (or 386780775 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 203213243220025 its reverse (520022342312302), we get a palindrome (723235585532327).

The spelling of 203213243220025 in words is "two hundred three trillion, two hundred thirteen billion, two hundred forty-three million, two hundred twenty thousand, twenty-five".