1025121203045 has 16 divisors (see below), whose sum is σ = 1239742513152. Its totient is φ = 813701004480.

The previous prime is 1025121203039. The next prime is 1025121203081. The reversal of 1025121203045 is 5403021215201.

It is not a de Polignac number, because 1025121203045 - 2⁸ = 1025121202789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3896279 + ... + 4151051.

It is an arithmetic number, because the mean of its divisors is an integer number (77483907072).

Almost surely, 2^{1025121203045} is an apocalyptic number.

It is an amenable number.

1025121203045 is a deficient number, since it is larger than the sum of its proper divisors (214621310107).

1025121203045 is a wasteful number, since it uses less digits than its factorization.

1025121203045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261052.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 1025121203045 its reverse (5403021215201), we get a palindrome (6428142418246).

The spelling of 1025121203045 in words is "one trillion, twenty-five billion, one hundred twenty-one million, two hundred three thousand, forty-five".